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22 February, 01:27

A swimming pool has to be drained for maintenance. The pool is shaped like a cylinder with a diameter of 5 m and a depth of 1.7 m. Suppose water is pumped out of the pool at a rate of 12 m3 per hour. If the pool starts completely full, how many hours will it take to empty the pool?

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  1. 22 February, 01:33
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    2.78hrs

    Step-by-step explanation:

    Volume of water in the pool = πr2h

    V = 3.142 * 2.5² * 1.7

    V = 33.38m³

    Emptying the pool out at 12m³ per hour

    = 33.38/12

    = 2.78hrs
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