Question

What is the surface area of the solid shown below?

Answer 1

`\text{C. }156\:\mathrm{cm^3}`

Explanation:

The surface area of the triangular prism consists of three rectangles and two triangles.

Rectangle One - 5 x 12 = 60 cm^2

Rectangle Two - 4 x 12 = 48 cm^2

Rectangle Three - 3 x 12 = 36 cm^2

Triangles - 2 x 1/2 x 3 x 4 = 12 cm^2

Thus, the total surface area of the solid is
`60+48+36+12=\boxed{\text{C. }156\:\mathrm{cm^3}}`