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

128 ft.2
128 ft. squared

320 ft.2
320 ft. squared

512 ft.2

Answer 1

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

Answer: 320 ft^2.