Question

An empty swimming pool needs to be filled to the top. The pool is shaped like a cylinder with a diameter of 8 m and a depth of 1.2 m.

Suppose water is pumped into the pool at a rate of 11 m per hour. How many hours will it take to fill the empty pool?
Use the value 3.14 for , and round your answer to the nearest hour. Do not round any intermediate computations.
hour(s)

Answer 1

5.5 hours

Explanation:

Volume of a cylinder = π(d/2)²h

V = (3.14)(8/2)²(1.2) = 60.288 m³

fill rate = 11 m³/hr

time to fill the pool = (60.288 m³)(1 hr/11 m³) = 5.48 hr ≈ 5.5 hrs