Question

Find the volume of the square pyramid shown. Round to the nearest tenth if necessary.

Answer 1

A. 600 ft3

B. 33.3 ft3

C. 1200 ft3

D. 400 ft3

Answer 2

Take the base of the pyramid (10x10) = 100.
Now to find the height you must find the radius to the center which is 5.
Use the pythagorean theorem to find the height
5^2 + x^2 = 13^2
Doing this you find that the height is 12.
The volume of a pyramid is B (base side squared) h (Height) /3
Bh/3
100(12)/3
400
The correct answer I believe is D.

Answer 3

For some reason I calculated 433.33 over and over. I am not sure where I went wrong. Thank you for your help