Question

What is the volume of the pyramid?

A. 139 cm3
B. 484 cm3
C. 142 cm3
D. 420 cm3

Answer 1

V = 1/3 B * H where B is the area of the base and H is the height

to find the base , we find the area

B = s^2 where s is the side length

so

V = 1/3 s^2 *H

V = 1/3 * 11^2 * 12

V = 1/3 * 121 * 12

V = 484 cm^3

Choice B