You're basically adding five because 10 - 5 = 5. Start from zero.
5, 10, 15, 20, 25
V = AH
where A = area of the base, and H = height of the prism
Enrico Fermi was an Italian–American physicist and the creator of the world's first nuclear reactor, the Chicago Pile-1. He has been called the "architect of the nuclear age" and the "architect of the atomic bomb". He was one of very few physicists to excel in both theoretical physics and experimental physics.
This is a quick sketch of the problem
the answer is about 235.31 ft
you have to use this equation to get the length of the other side, which is roughly 213 ft:
then it's just Pythagorean Theorem to get the end result: