Question

A square pyramid has a base area of 64 ft2. The pyramid’s total surface area is 224 ft2.

What is the area of each triangular face?

160 ft2

32 ft2

53 1/3 ft2

40 ft2

Answer 1

40 ft^2

224=64+4c
160=4x
x=40

Answer 2

The area of each triangular face is (224-64)/4 = 40 (ft2)

Explanation :

Total surface area = Area of Base + Area of triangular face x 4