Question

Find the surface area of the prism.

A solid with six rectangular faces that has length 3 inches, width 8 inches, and height 11 inches.
3 in
8 in
11 in
The surface area of the prism is
nothing insquared.

Answer 1

290 in²

Explanation:

The surface area of a prism is found using the following formula: SA = 2(lh+lb+bh). This formula takes the area of each face (6 in total( and adds them together to find a total sum. Substitute l = 3, b = 8 and h = 11 to solve for the surface area.

SA = 2(lh+lb+bh)

SA = 2(3*11+3*8+8*11)

SA = 2(33 + 24 + 88)

SA = 2(145)

SA = 290