Question

Find the surface area of the prism if the height is 1 ft, the length is 4 ft, and the width is 7 ft

Answer 1

78 square feet

Explanation:

You want the surface area of a rectangular prism 1 ft high by 4 ft long and 7 ft wide.

Area

The surface area is given by ...

SA = 2(LW +H(L +W))

SA = 2(4·7 +1(4 +7)) = 2(28 +11) = 78 . . . . square feet

The surface area of the prism is 78 square feet.

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