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20 August, 05:12

A swimming pool has to be drained for maintenance. The pool is shaped like a cylinder with a diameter of 10m and a depth of 1.4m. Suppose water is pumped out of the pool at a rate of 18 m3 per hour. If the pool starts completely full, how many hours will it take to empty the pool?

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  1. 20 August, 05:41
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    6.1 hrs

    Step-by-step explanation:

    Volume of the cylinder = pi * (10/2) ^2 * 1.4 m^3 = 109.956 m^3

    So, time required = 109.953/18 hrs = 6.108 hrs ≈ 6.1 hrs
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