Question

please helppp D:
Pyramid A is a square pyramid with a base side length of 9 inches and a height of 4 inches. Pyramid B has a volume of 8,100 in3. How many times bigger is the volume of pyramid B than pyramid A?
15
32
54
75

Answer 1

volume of a pyramid = (1/3) * height* area of the base

Answer 2

for pyramid A
volume = 91/3) * 4* 9^2

Answer 3

no - this formula applies to all pyramids

Answer 4

pyramid A 9,828??

Answer 5

* thats (1/3)*4*9^2

Answer 6

im so confused....