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Q: Why does the formula for finding the surface area of a rectangular prism is helpful?

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It is helpful because when you do the problem you know what to do.

It's not.. It may be, depending why, but there isn't a set formula for it. You just use the fundamental rectangle-area formulae & string them together.

The formula for finding the surface area of a rectangular prism is 2(wh + lw + lh), where w is width, h is height, and l is length. 3.14 is the value for pi, which is only used for circular objects, like circles, cylinders, and spheres. It has nothing to do with rectangular prisms. Click on the related link below for an illustration of the formula for the surface area of a rectangular prism.

LxWx2

False...

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its not i dont no why

It is helpful because when you do the problem you know what to do.

I am not sure that a rectangular prism is in any position to care!

It's not.. It may be, depending why, but there isn't a set formula for it. You just use the fundamental rectangle-area formulae & string them together.

The formula for finding the surface area of a rectangular prism is 2(wh + lw + lh), where w is width, h is height, and l is length. 3.14 is the value for pi, which is only used for circular objects, like circles, cylinders, and spheres. It has nothing to do with rectangular prisms. Click on the related link below for an illustration of the formula for the surface area of a rectangular prism.

The answer give by "The Community", below is mindblowingly irrelevant. Oh, well, that is the kind of rubbish that we, at Answers, have to put up with - in the name of Wiki!If the length, breadth and height of a rectangular prism are represented by L, B and H, thenSurface area = 2*(L+B + B*H + H*L) square units.

LxWx2

surface area of a rectangular prism is the formula: 2lw+2wh+2lh

The first comprises one rectangular face and four triangular faces whereas the second has two triangular and three rectangular faces.

what is the formula to finding the total surface area of a rhomboid?!

Suppose that the area of the rectangular base is: lw then if the height is: h the surface area is: lw + lh + wh I believe that formula is for the surface area of a rectangular prism...

2lw + 2lh + 2wh

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