A water treatment plan is built with three cylindrical tanks to contain the water for a town. Each tank has a radius of 15 feet and a depth of 25 fee.

If there are about 7.5 gallons in a cubic foot of water, approximately how many gallons of water can be treated at the plant at any one time?

A. 7.1 * 10^3
B. 1.3 * 10^5
C. 4.1 * 10^5
D. 4.1 * 10^6

I did: pi * 15^2 * 25 * 3 * 7.5 = 397607.82
(area * height * num tanks * gallons/volume)

This doesn't match any of the options given. What could be wrong?

4 answers

The answers are wrong, you are correct.
thanks mr. pursley
Round to 397607.82 and move decimal 5 times

4.1x10 to the 5th power
I have the answer sheet and it says the answer is C