Question

Pyramid A is a square pyramid with a base length of 9 inches and a height of 10 inches. Pyramid B has the volume of 1,350 cubic inches. How many times bigger is the volume of pyramid B than A? Give your answer as a percent

Answer 1

volume of a square pyramid: (1/3) * (base length) * (base length) * height
apply this to pyramid A

now, it wants to know how much bigger pyramid B is compared to A. subtract volume of pyramid B - volume of pyramid A to find the difference, then divide by volume of pyramid A. multiply by 100% to convert to a percentage