Question

A swimming pool has to be drained for maintenance. The pool is shaped like a cylinder with a diameter of 6 m and a depth of 1.3 m. Suppose water is pumpedout of the pool at a rate of 12 m' per hour. If the pool starts completely full, how many hourswill it take to empty the pool?

Answer 1

Answer: 3.063 hours

Explanation:

Answer 2

In this case, we going to need the formula for the volume of a cylinder:

`\pi r^2h`

being r the radius and h the depth

`\pi\cdot3^2\cdot1.3=36.7566`

The ratio of pumped is 12

so we divide the volume of the pool by the ratio to get the time

`(36.7566)/(12)=3.0630`

Answer: 3.063 hours