Question

The surface area for a rectangular prism with a square base is SA=2s2+4sh. What is the surface area if s=3 and h=5?

Answer 1

The surface area is 78 unit square.

Explanation:

Given : The surface area for a rectangular prism with a square base is
`SA=2s^2+4sh`.

To find : What is the surface area if s=3 and h=5?

Solution :

The surface area for a rectangular prism with a square base is
`SA=2s^2+4sh`

Substitute, s=3 and h=5

`SA=2(3)^2+4(3)(5)`

`SA=2* 9+4* 15`

`SA=18+60`

`SA=78`

Therefore, The surface area is 78 unit square.