
Ritaank T. answered 03/15/19
MIT student for SAT prep + math
We are getting 6000 cubic inches per minute into the tank.
After 5 minutes, we will have 30,000 cubic inches of water in cylindrical tank.
Cylinder volume is π*r2*h. Our dimensions are all inches. We want the height of the water level. Therefore, we want to find h such that π*r2*h = 30,000.
Diameter is 180 inches---what is the radius?
All that's left is plugging in, solving, and rounding.