What is the surface area of a square pyramid where the base edge is 8 ft. and the slant height is 16 ft.
512
320
256
128
To find the surface area of a pyramid, we need to find the area of the base and the area of each triangular face.
The area of the base of a square pyramid is given by: base edge^2 = 8^2 = 64 square feet.
The surface area of each triangular face can be found using the formula: (1/2) * (base edge) * (slant height) = (1/2) * 8 * 16 = 64 square feet.
Since a square pyramid has 4 triangular faces, the total surface area is 4 * 64 = 256 square feet.
Therefore, the correct answer is 256.