Question

The volume of a right square pyramid is 80 cubic feet. If the sides of the base are doubled, but the height remains the same, what is the new volume of the pyramid?

Answer 1

D. 320

Explanation:

Sorry for the very late response. But if anyone wasn't sure if 320 is correct, it is. I can confirm this because I just took the test. I hope I could help! (:

Answer 2

320 cubic feet

Explanation:

The volume is proportional to the product of the area of the base and the height of the pyramid. When the dimensions of the base are doubled, the area is multiplied by 2² = 4, hence the volume of the pyramid will be multiplied by 4.

4 × (80 ft³) = 320 ft³

The new volume of the pyramid is 320 cubic feet.