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A right rectangular prism is 3 in by 4.25 in by 18.25 in. What is the total surface area of the prism?

145.0625 in2
180.625 in2
264.625 in2
290.125 in2

User Jdforsythe
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1 Answer

2 votes

Answer:

(d) 290.125 in²

Explanation:

You want to know the total surface area of a rectangular prism 3 in by 4.52 in by 18.25 in.

Area

The surface area is given by the formula ...

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

Using the given values, this is ...

A = 2((3 in)(4.25 in) +(18.25 in)(3 in +4.25 in)) = 290.125 in²

The total surface area of the prism is 290.125 in², matching choice D.

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A right rectangular prism is 3 in by 4.25 in by 18.25 in. What is the total surface-example-1
User Styfle
by
7.3k points