Question

Directions: Find the surface area of each figure.

1.
20.7 in
4
11 in
11 in

Answer 1

576.4 in²

Explanation:

Surface area of square pyramid = Base Area + ½(perimeter of base)(slant height)

Base area = s² = 11² = 121 in.²

Perimeter of base = 4(11) = 44 in.

Slant height = 20.7 in.

Plug in the values

Surface area = 121 + ½(44)(20.7)

= 576.4 in²