Question

A rectangular pyramid has a base that is 12 meters long and 12 meters wide. The pyramid's slant height is 20 meters. What is its surface area?

Answer 1

• 480 m²

Explanation:

Surface area, 4 faces only, excluding the area of the base:

• A = 4*(1/2*12*20) = 480 m²

Total surface area, including the base:

• S = 480 + 12² = 624 m²