Question

Surface area of solid figures

Answer 1

C. 468mm²

Explanation:

The formula for the surface area of rectangular prism is:

`A=2(wl+hl+hw)`

Let's break down our variables.

L = 12mm

W = 6mm

H = 7mm + 2mm = 9mm

Now we substitute our values in the formula:

`A=2((6)(12)+(9)(12)+(9)(6))`

`A=2(72+108+54)`

`A=2(234)`

`A=468mm^(2)`