Question

What is the surface area of a square pyramid where the base edge is 8 ft. and the slant height is 16 ft.?(1 point)
Responses

256 ft.2

256 ft. squared

512 ft.2

512 ft. squared

320 ft.2

320 ft. squared

128 ft.2

Answer 1

Base area = 8^2 = 64 ft^2.
Lateral area = (1/2)·perimeter·slant height = (1/2)·(4·8)·16 = 256 ft^2.
Total surface area = 64 + 256 = 320 ft^2.

Answer: 320 ft^2.