Question

A decorative gift box is in the shape of a

triangular prism as shown. What is the
surface area of the box?


12.5 in.
10 in.
5 in.
7.5 in.

Answer 1

Explanation:

Answer 2

The surface area is: 225 in²

Explanation:

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Area of each triangular base:

`(1)/(2)(7.5)(10)=37.5`

Area of the rectangular faces:

`5 * 10=50`

`5 * 12.5=62.5`

`7.5 * 5=37.5`

Add to find the surface area:

`37.5+37.5+50+62.5+37.5=225`

Thus, the surface area is : 225²