Question

what is the surface area of the pyramid shown to the nearest whole number? the diagram is not drawn to scale.
a. 144 ft^2
b. 252 ft^2
c. 108 ft^2
d. 63 ft^2

Answer 1

Surface Area (S.A.) is the sum of the area of the base and all of the faces

Area of the base = 6 x 6 = 36
Area of one of the faces = (1/2) b x h = (1/2) x 6 x 9 = 27

There are 4 faces so the sum of the areas = 36 + 4(27) = 144 ft²

Answer: A

Answer 2

The surface area is 144ft^2