Question

The square pyramid below has a height of 12 centimeters and a slant height of 20 centimeters. The square base of the pyramid has side lengths of 32 centimeters.

What is the lateral area of the pyramid?

Answer 1

So in a square pyramid, the lateral faces are the four triangles that form the top and side portions of the shape. The general formula for the lateral surface area of a regular pyramid is lateral area = (perimeter of base x slant height of pyramid) ÷ 2.

Answer 2

Answer is D, 1280cm^2.