Question

Filip is making a crate that is a prism with a square base. The base side length is 8 in. and the height of the prism is 20 in. Which of the following correctly calculates the surface area of this prism?(1 point)
Responses

640 in.2
640 in. squared

768 in.2
768 in. squared

656 in.2
656 in. squared

704 in.2

Answer 1

Surface area = 2(base area) + lateral area.
Base area = 8^2 = 64, so 2 bases = 128.
Lateral area = perimeter × height = (4·8)·20 = 32·20 = 640.
Total = 128 + 640 = 768 in^2.

Answer: 768 in.^2