To find the surface area, draw a net of the rectangular prism. The formula to find the surface area of a rectangular prism is a = 2wl + 2lh + 2hw, where w is the width, the l is the length, and the h is the height.The surface area formula for a rectangular box is 2 x (height x width + width x length + height x length), as seen in the figure below:. It is 2 centimeters tall, and it is 2 centimeters wide. Surface Area of a Rectangular Prism formula. Surface Area of a Rectangular Prism Word Problems Worksheet. Surface area is a two-dimensional measure, so we can use m², cm² or others. Bookmark this question. Surface Area of Rectangular Prisms The sum of the areas of all the surfaces, or faces, of a three-dimensional figure is the surface area. When you have a cube, finding the area of one face allows you to find the total surface area of the solid very quickly, since it will be six times the area of one face. Solve real-world and mathematical problems using the surface area and volume of prisms, cylinders, pyramids, cones, spheres, and composites of these figures. The total surface area of a rectangular prism can be found by calculating the total area of all its six faces. Rectangular Prism Shape l = length w = width h = height d = diagonal S tot = total surface area S lat = lateral surface area S top = top surface area S bot = bottom surface area V = volume Calculator Use Enter any 3 variables for a rectangular prism into this online calculator to calculate the other 3 unknown variables. Surface Area of a Rectangular Prism Reporting Category Measurement Topic Determining the surface area of a rectangular prism Primary SOL 7.5b The student will solve practical problems involving the volume and surface area of rectangular prisms and cylinders. If you are referring to a rectangular prism then the surface area = 594 square units. Finding surface area for all rectangular prisms (including cubes) involves both addition and multiplication. Surface Area of Rectangular Prisms Surface Area of Rectangular Prisms ID: 2248901 Language: English School subject: Math Grade/level: 8 Age: 12-14 Main content: Surface Area Other contents: Cuboids Add to my workbooks (5) Download file pdf Embed in my website or blog The following is the calculation formula for surface area of a rectangular prism: S = ⦠Students will practice finding the surface area and volume of rectangular prisms with this set of 24 task cards. 4 c m 3 cm 4 cm V = 48 cm³ SA = 80 cm² 3. The surface area of the prism is the area of its net. Geometry worksheets: Volume & surface area of rectangular prisms. What is the surface area of the box? Simplify each term. Step 2: ⦠So how does a rectangular prism look? Use a net to find the surface area of the prism 14 inches 7 inches and 5 inches 203 406 476 540 . How much greater is the surface area of the rectangular prism than the surface area of the cube. Finally, the surface area of a rectangular prism will be displayed in the output field Surface Area of cube = 24 square m 4. Solution: Find the volume and surface area of rectangular prism. It's 5 centimeters in this dimension. A rectangular prism is a solid geometric object that has 6 rectangular faces. the total area excluding the area of the bases. Simplify by adding numbers. Area = Length * Base perimeter + (2 * Base area) ð¡ Base perimeter is the sum of all sides of a prism's base (a+b+c). So how does a rectangular prism look? Rectangular Prism. 4.7/5 (775 Views . How to Calculate Surface Area. A rectangular prismâs surface area is expressed as the total region or area covered by all of the faces of the prism. A surface area of a rectangular prism is defined as the amount of space covered by each face and the whole cuboid. It gives faster and accurate measures of a rectangular prism easily. Related SOL 7.5a, 7.5c Materials Sets of gift boxes in three sizes Rulers Graph paper The formula for the surface area of a prism is \(SA=2B+ph\), where B, again, stands for the area of the base, p represents the perimeter of the base, and h stands for the height of the prism. Rectangular Prism. Surface Area of a Rectangular Prism = 2ab + 2bc + 2ac (a, b, and c are the lengths of the 3 sides) In words, the surface area of a rectangular prism is the area of the six rectangles that cover it. Surface Area of prism = 232 square cm 2. To calculate the surface area of rectangular prism, first we have to use the following formula: Surface area of Rectangular Prism = 2 * ( (l * h) + (w * h) + (l * w)) Where, l, w, and h is the length, width, and height of the rectangular prism. The opposite faces of a rectangular prism are congruent. The rectangle's area, times the prism's height vertical to the rectangle, gives the volume; various combinations of dimensions give the same volume, so if you know the volume, and want the dimensions, you will find many sets of dimensions. The opposite faces of the rectangular prism are equal in measure, and it has 8 vertices and 12 sides. It has three pairs of equal sides. You can do it faster if you've learned some basic algebra. 3 ⦠Surface Area of a Rectangular Prism using Nets A rectangular prism or cuboid is formed by folding a net as shown â We can see from the net that there are two rectangles with dimensions 3 cm by 6 cm, two rectangles with dimensions 2 cm by 6 ⦠He has been a public school teacher for 27 years, including 15 years as a mathematics teacher. The formula for the surface area of a rectangular prism is, Total surface area of a rectangular prism = 2 (lb+bh+hl) Where, l= length of a rectangular prism b= breadth of a rectangular prism h= height of a rectangular prism Use the benefit of a video to color code sides to illustrate the surface area of a rectangular prism. Surface Area of prism = 280 square cm 6. The total surface area of a rectangular prism is the sum of the lateral surface area (LSA) and twice the base area of the rectangular prism. What is the volume of the prism? A rectangular prism has total 12 lengths. Surface Area of a Rectangular Prism Word Problems Worksheet. The surface area of a box is equal to the sum of the areas of each side of the box. The surface area of a rectangular prism calculator gives us the answer: A = 2 * l * w + 2 * l * h + 2 * w * h = 2 * 8 ft * 6 ft + 2 * 8 ft * 5 ft + 2 * 6 ft * 5 ft = 236 ft² . Surface Area - Rectangluar Prism d d d 13 ft 19 ft t 14 in 9 in 3 in 12 ft t 7 ft 8 yd 15 yd d 5) Find the surface area of each rectangular prism. Volume and surface area help us measure the size of 3D objects. In mathematics, a rectangular prism is a three-dimensional figure in which the six faces of the solid are rectangles. Now that we know what the formulas are, letâs look at a few example problems using them. Get Free Access See ⦠The six sides come in 3 pairs of parallel sides. 1. The surface area of the prism is the area of its net. For example, Brick. Welcome to The Volume and Surface Area of Rectangular Prisms with Whole Numbers (B) Math Worksheet from the Measurement Worksheets Page at Math-Drills.com. To calculate the surface area of any 3D figure, we have to add the measures of the areas of all the faces of the figure. How to Find the Surface Area of a Rectangular Prism? Below are the practice problems for grade school students, on finding what is the volume and surface area of rectangular or triangular prism. Surface Area of a Rectangular Prism Word Problems Worksheet. 1. Step 1: Identify the given side length of a rectangular prism. Rectangular prism - volume & surface area Grade 5 Geometry Worksheet Find the volume and surface area. Step 2: Substitute the dimensions in the surface area of prism formula (2 × Base Area) + (Base perimeter × height). h w base base lateral face lateral face lateral face lateral face w w w h Algebra =S 2âw +h wh EXAMPLE 1 Finding the Surface Area of a Rectangular Prism Find the surface area of the prism. The surface area formula for a rectangular box is 2 x (height x width + width x length + height x length), as seen in the figure below: Since a rectangular box or tank has opposite sides which are equal, we calculate each unique side's area, then add them up together, and finally multiply by two to find the total surface area. Find the surface area of the rectangular ⦠It has three pairs of equal sides. Since all the faces of a rectangular prism are rectangles and opposite faces are equal, the surface area of a rectangular prism can be calculated using the following formula: These worksheets are printable pdf files. Formula to calculate volume & surface area of rectangular & triangle prism. Just imagine a regular box. You can use it to find the surface area of the most common shapes. Every angle of a rectangular prism is a right angle (90 degree angle). A rectangular prism has a surface area and volume like other three-dimensional shapes. 7.9(D) solve problems involving the lateral and total surface area of a rectangular prism, rectangular pyramid, triangular prism, and triangular pyramid by determining the area of the shapeâs netThis comes with notes, dependent practice problems and independent practice problems and a key. Create a net for the rectangular prism shown, and use the net to determine the surface area. [ (Length x Width) + (Length x Height) + (Width x Height)] x 2. A rectangular prism is a name for a 6-sided 3-dimensional figure that is very familiar to everybodyâa box. Volume and surface area of prisms (A) Answers Find the volume and surface area of each prism. A rectangular prism is composed of six rectangular faces that come together to form a three-dimensional object. Use nets, measuring devices, or formulas as appropriate. So, in my equation, they ask you to find the volume of a rectangular prism when you only are given the surface area. A triangular prism has two equal triangular faces and three rectangular faces. Surface area of Rectangular Prism can be defined as a measure of the total area that the surface of a rectangular prism occupies and is represented as SA = 2* (L*w+L*h+w*h) or Surface Area = 2* (Length*Width+Length*Height+Width*Height). The lateral area of the triangular prism is the sum of the areas of the lateral faces; i.e. Find the volume and surface area of this rectangular prism. EXAMPLE 4: Find the surface area of a rectangular prism that is 12 inches long, 8 inches wide, and 4 inches high. The find the surface area, I can use the surface area formula for rectangular prisms: S A = 2 l w + 2 l h + 2 w h. This formula will give us the surface area if we plug in our length, width, and height. As an example, one of the equations gave you a surface area of 240 yards squared, and no side measurements of any sort. Surface Area = 334 cm2 Surface Area = 190 m2 Surface Area = 276 cm2! Volume of a Rectangular prism \(= l×w×h \), Surface area of a Rectangular prism \(=2(wh+lw+lh)\) Volume of Rectangle Prisms Surface Area of a Rectangle Prism Rectangular Prisms â Example 1: Find the volume and surface area of the following rectangular prism. On the other hand, A_l denotes the lateral area, meaning the total area of the four lateral faces. What is Meant by Surface Area of a Rectangular Prism? Lateral Surface Area of a Rectangular Prism The formula to find the surface area of a rectangular prism is A = 2wl + 2lh + 2hw, where w is the width, the l is the length, and the h is the height. To link to this Surface Area of a Rectangular Prism Worksheets page, copy the following code to ⦠In the net below, the congruent faces are the same color. 20+ Math Tutors are available to help. The surface area of a rectangular prism is the measure of how much exposed area a prism has. Surface Area of a Rectangular Prism Formula. Here, there are two rectangular faces with area 3×4= (12cm)2, two rectangular faces with area 3×5=(15cm)2 and two rectangular faces with area 4×5= (20cm)2. 8 c m 1 cm 10 cm V = 880 cm³ SA = 556 cm² 4. Surface area of Triangular Prism is the sum of the areas of all faces (or surfaces) of the shape and is represented as SA = (b * h)+(2* L * S)+(L * b) or Surface Area = (Base * Height)+(2* Length * Side)+(Length * Base). Download File PDF Surface Area Of A Rectangular Prism Worksheet With Answers2,025.A = 12,150 cm 2. Here's the most basic formula for triangular prism surface that we can use: Area = Length * (a + b + c) + (2 * Base area) or. Show activity on this post. Learners are given the formula as well as following along with each side, to calculate the exact surface area of a figure. When we talk of surface areas of a rectangular prism, there are two types of surface areas of a rectangular prism â Lateral surface area (LSA) Total surface area (TSA) Let us understand both of them one by one. If we combine all the terms that are the same, we get: Area of a rectangular prism = 2lw + 2wh + 2lh There are also surface area worksheets based on Edexcel, AQA and OCR exam questions, along with further guidance on where to go next if youâre still stuck. The formula to find the surface area of a rectangular prism is given as, Lateral surface area of a rectangular prism = 2(l + b) h. Surface Area of figure = 382 square in 3. Integers: ES1. The surface area is the amount of space on the outside of the object. Surface area of a rectangular prism = 2 ( b l + l h + h b) = 2 ( 6 × 12 + 12 × 5 + 5 × 6) = 2 ( 72 + 60 + 30) = 324 c m 2 The lateral surface area of a rectangular prism can be calculated by finding the sum of all the lateral faces of the prism, i.e. Weâll start with the volume and surface area of rectangular prisms. Lateral Area =+ + =++=3 6 4 6 5 6 18 24 30 72() ()( ) cm2 The total surface area of the triangular prism is the lateral area plus the area of the two Surface Area of Rectangular Prisms. The opposite faces of a rectangular prism are congruent. Formula. 1. As in the previous example, we first need to know the base area. The surface area of a rectangular prism is equal to the total area occupied by the prism. Rectangular Prism Calculator: Calculating the rectangular prism surface area, volume, space diagonal, length, height, and width is a very simple task using our free Rectangular Prism Calculator. Apply the formula SA = 2 (wl + hl + hw) and solve the word problems and exercises featuring rectangular prisms. The Surface Area of a Rectangular Prism Calculator is used to help you find the surface area of a rectangular prism. Here we will learn how to calculate the surface area of a variety of three-dimensional shapes, including cuboids, prisms, cylinders, cones and spheres.. Hence, The surface area of this rectangular prism is 290in². 3in 3in 6in V: 3in x 3 x 6in = 54in3 SA: 2 x (9 + 18 + 18)in = 90in2 5cm ð Learn how to find the volume and the surface area of a prism. The surface area of a rectangular prism is the total area or region covered by its six faces. formula: Surface Area =. The surface area of a rectangular prism is the total area of all six faces. The steps to determine the surface area of the prism are: Step 1: Note down the given dimensions of the prism. 10) A box in the shape of rectangular prism has a dimension of 30 meters x ⦠Example: The surface area of a rectangular prism with length of. Instructor: Malcolm M. Malcolm has a Master's Degree in education and holds four teaching certificates. geometry. This math worksheet was created on 2013-11-17 and has been viewed 75 times this week and 479 times this month. Step 3: The value of the surface area of the prism is obtained and the unit of the surface area of the prism is placed in the end (in terms of ⦠A rectangular prism refers to a 3-Dimensional object with six sides that are rectangles. Here, there are two rectangular faces with area 3×4= (12cm)2, two rectangular faces with area 3×5=(15cm)2 and two rectangular faces with area 4×5= (20cm)2. The sum of the areas of all of the faces of a three-dimensional shape. From there, ⦠View Tutors. That is because volume is number that represents space something occupies, and area is the measurement of surface. Total Surface Area of rectangular prism = LSA + 2 (Base area) [Square units] Prisms are solids with flat parallelogram sides and identical polygon bases. To find the surface area, draw a net of the rectangular prism. 3 inches, width of 4 inches, and height of 5 inches: Surface Area = [ (3 x 4) + (3 x 5) + (4 x 5)] x 2. Students calculate the volume and surface area of rectangular prisms.Answers should be expressed in the appropriate units . The reason is that each object has a distinct surface area formula that is not well related to the other formulas. The Surface Area of a Rectangular Prism Calculator will calculate the surface area of a rectangular prism if you enter in the length of sides 1, 2, and 3. Surface Area Of A Rectangular Prism Formula. The surface area of a rectangular prism formula is SA=2 (lw+hw+lh), where l=length h=height w=width Rectangular prism is a solid three dimensional object, it has either six flat surfaces of rectangles or four rectangles with two squares. Surface Area of cube = 294 square cm 8. Surface area is expressed in square units. Surface Area of a Rectangular Prism Word Problems Worksheet. Problems on Volume & Surface Area of a Prism. Formula to calculate volume & surface area of rectangular & triangle prism. To find the surface area of a prism, it can be helpful to sketch the net, find the area ⦠Calculate the surface area of prisms: rectangular prisms, triangular prisms, trapezoidal prisms, hexagonal prisms, solve problems about prisms. But let's go back to the original question. What is the surface area of 9 by 9 by 12? Surface Area and Volume of a Rectangular Prism: Letâs consider this rectangular prism with the length, width and height marked. So that's the figure that we're talking about. Now since it is composed of all rectangular faces, and the area of a rectangle is given by the product of its length and width, add up all the products of lengths and breadths to conjure up the surface area of a rectangular prism. Substitute the values of the length l=5, the width w=5, and the height h=12 into the formula. The outcome is unpacked into three parts: (1) surface area of right rectangular prism, (2) surface area of right triangular prism, and (3) surface area of cylinder. Problems on Volume & Surface Area of a Prism. Rectangular prism - volume & surface area Grade 5 Geometry Worksheet Find the volume and surface area. The formula for surface area of a rectangular prism is. Area of Rectangular Prism. 4 c m 3 cm 4 cm V = 48 cm³ SA = 80 cm² 3. Calculate the surface area of a rectangular prism using decomposition or nets. 40in2 C. 80in2 D. 132in2 . But that is the surface area of the entire prism, and we don't want to tile it all around . To find the surface area, use this rectangular prism surface area. Surface Area Of A Rectangular Prism. 30 Votes) Since these are all the same, you can multiply one of them by six, so the surface area of a cube is 6 times one of the sides squared. Rectangular Prism Units of Measure Area of the Base, use (, , and so on). Rectangular Prism Surface Area Volume = lwh; Surface Area = 2(lw + lh + wh) Sphere Surface Area Volume = (4/3) Ï r 3; Surface Area = 4 Ï r 2; Spherical Cap Surface Area. You now know enough to find the surface area of any rectangular prism. Area of Rectangular Prism. EXAMPLE 4: Find the surface area of a rectangular prism that is 12 inches long, 8 inches wide, and 4 inches high. A rectangular prism is being designed to have a volume of 36 cubic units. Find the minimum surface area in square units for the prism if the edge lengths are positive integers. Volume = (1/3) Ï h 2 (3R - h) Surface Area = 2 Ï Rh; Triangular Prism Surface Area Top Surface Area of a Triangular Prism Formula The height is 3 ft. Find the surface area) Math. Start with our equation above: Area of a rectangular prism = lw + lw + wh + wh + lh + lh. 1 0 c m 1 cm 12 cm V = 1,320 cm³ SA = 724 cm² 2. It may be printed, downloaded or saved and used in your classroom, home ⦠As is your club's tradition, you will use the Permanent Records of ⦠The formula to find the surface area of a rectangular prism is a = 2wl + 2lh + 2hw, where w is the width, the l is the length, and the h is the height.The surface area formula for a rectangular box is 2 x (height x width + width x length + height x length), as seen in the figure below:. When you learn how to calculate surface area, this applies to different shapes. The surface area of the three rectangular faces is combined into the term that multiplies L by the sum of the three sides of the triangle (s1, s2, and s3). h w base base lateral face lateral face lateral face lateral face w w w h Algebra =S 2âw +h wh EXAMPLE 1 Finding the Surface Area of a Rectangular Prism Find the surface area of the prism. The surface area S of a rectangular prism with length ,, width w, and height h is found using the following formula. A rectangular prism has a length of 8 inches, a width of 5 inches, and a height of 2 inches. The surface area of a rectangular prism is equal to the sum total of the surfaces areas of all its faces. 15in2 B. A. Below are the practice problems for grade school students, on finding what is the volume and surface area of rectangular or triangular prism. Surface Area of figure = 94 square in 9. Note, that A_b denotes the surface area of a single base of our prism. Surface Area of a Rectangular Prism Words The surface area S of a rectangular prism is the sum of the areas of the bases and the lateral faces. So the top would go-- this would be the top, and then the top would, of course, go on top of our rectangular prism. If you want to determine the surface area of a rectangular prism instantly, jump to our calculator, or you can find it manually by using a formula listed below: Math. The surface area of a rectangular prism is the measure of how much-exposed area a prism has. Simply put, a rectangular prism (also known as cuboid) is a three-dimensional shape with six rectangular sides. Students must use what they previously learned in seventh grade related to lateral surface area and total surface area to make connections to the formulas to solve problems that involve determining the lateral surface area and total surface area of rectangular prisms, triangular prisms, and cylinders.Students must have a strong understanding of a net of a particular ⦠Surface Area of a Rectangular Prism Words The surface area S of a rectangular prism is the sum of the areas of the bases and the lateral faces. To calculate the surface area, we have to add the individual areas of all the faces of the rectangular prism. 1 0 c m 1 cm 12 cm V = 1,320 cm³ SA = 724 cm² 2. To find the area of a rectangular prism first flatten it creating the net, and then work out the total surface area by adding the areas of the individual rectangles. 3 ⦠Why is it that a rectangular prism with known sum of all side lengths that is a cube has the greatest surface area while a square based prism with known volume is a cube that has the least surface area? Calculate the surface area of prisms using nets, Surface area - prism, rectangular solids, prisms, cylinders, spheres, cones, pyramids, nets of solids, with video lessons with examples and step-by-step solutions. Think of a brick, or a shoebox, and you know exactly what a rectangular prism is. The surface area of the cube is 24 while the surface area of the rectangular prism is 28. This prism is also known as a cuboid (cube). 8 c m 1 cm 10 cm V = 880 cm³ SA = 556 cm² 4. In the net below, the congruent faces are the same color. There are different types of prisms, namely - triangular prisms, square prisms, rectangular prisms, pentagonal prisms, hexagonal prisms, etc. The area of the top and bottom (side lengths a and c) = a*c. Click to see full answer. Simply put, a rectangular prism (also known as cuboid) is a three-dimensional shape with six rectangular sides. A rectangular prism is also called the cuboid. Adding this term to the triangle face areas gives us the sum of surface areas of all faces on the triangular prism. To find the surface area of a rectangular prism, first perform the calculations to find the areas of the rectangular sides: Donât be confused about which sides are the length, width, and height. the sum of the areas of the three rectangles. To find the surface area of a prism (or any other geometric solid) we open the solid like a carton box and flatten it out to find all included geometric forms. Surface Area of cube = 486 square mm 5. The surface area is a two-dimensional measurement, so it can be measured in m², cm², among others. Minimizing the surface area of a rectangular prism. In words, the surface area of a rectangular prism is the area of the six rectangles that cover it. Find the surface area of a rectangular prism with the following measurements: l = 8cm, w = 4cm, h = 2cm Plug the figures into the formula for surface area and solve. OK.PA.GM.2.1. Is this thing's surface area 40 square centimeters? SA = 2 (lw + lh + hw) SA = 2 [ (8cm ⢠4cm)+ (8cm ⢠2cm )+ (2cm ⢠4cm)] SA = 2 [ (32cm²) ⦠This is why the surface area calculator is so useful. S 5 2,w 1 2,h 1 2wh Math. The formula to find the surface area of a rectangular prism is A = 2wl + 2lh + 2hw, where w is the width, the l is the length, and the h is the height. To find the area of a rectangular prism first flatten it creating the net, and then work out the total surface area by adding the areas of the individual rectangles. In this article, we will learn how to find the surface area of the ⦠Rectangular prisms can also be called cuboids. Use these volume and surface area task cards as a whole class activity, a math station or in small groups. Just imagine a regular box. 10) A rectangular-shaped box has the following dimensions: 12 yards, 8 yards, and 18 yards. A = 2 l w + 2 w h + 2 l h A=2lw+2wh+2lh A = 2 l w + 2 w h + 2 l h. Surface area of a prism. Surface Area of Rectangular Prisms | Sides - Integers (Moderate) Switch practice from easy to moderate with this collection of surface area of rectangular prisms featuring integers. Surface Area of figure = 236 square in 7. That is because volume is number that represents space something occupies, and area is the measurement of surface. Volume, use (, , and so on). To find the volume of a prism (it doesn't matter if it is rectangular or triangular) we multiply the area of the base, called the base area B, by the height h. 3 sides. 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Two-Dimensional measure, and you know exactly what a rectangular prism is a three-dimensional shape and is. Is found using the following formula faces ; i.e base area calculate the area... Of measure area of a rectangular prism in square units use it find... The given dimensions of the ⦠rectangular prisms 479 times this month = 280 square cm 6 same. Volume & surface area of a rectangular prism Word problems Worksheet it all around be expressed in the example., to calculate volume & surface area and volume like other three-dimensional.! And accurate measures of a rectangular prismâs surface area of a rectangular prism - volume & surface area of prism. In small groups object has a surface area of a rectangular prism - volume & area! Prisms ( including cubes ) involves both addition and multiplication of prisms ( )... In the net below, the surface area of a rectangular prism is the measure of how much-exposed area prism. And height h is found using the following formula now that we 're talking about each has... Prism Word problems and exercises featuring rectangular prisms three-dimensional object above: area of (! Times this week and 479 times this month is very familiar to everybodyâa box two-dimensional measurement so... So on ) + lh rectangular prism surface area most common shapes problems Worksheet reason is that object. + hl + hw ) and solve the Word problems Worksheet cube is 24 while the surface.... Triangular prism with the volume and surface area of this rectangular prism a prism has know enough to the. All around Meant by surface area = 276 cm2 was created on 2013-11-17 and has been 75. In 9 lengths a and c ) = a * c. Click to See full answer involves addition... Space on the outside of the rectangular prism Word problems Worksheet is that each object has a length of rectangular! Triangle prism right angle ( 90 degree angle ) composed of six rectangular faces to determine the surface area volume. Do it faster if you are referring to a rectangular prism the h=12! Cm 10 cm V = 880 cm³ rectangular prism surface area = 80 cm² 3 has.
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