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Taylor
Taylor asked in Education & ReferenceHomework Help · 8 years ago

Math Homework Help!? Need someone smart?

A swimming pool has to be drained for maintenance. The pool is shaped like a cylinder with a diameter of 16m and a depth of 2.2m. If the water is pumped out of the pool at the rate of 15m^3 per hour, how many hours does it take to empty the pool?

Use the value 3.14 for pi, and round your answer to the nearest hour.

3 Answers

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  • ?
    Lv 7
    8 years ago

    First we have to figure out how much water is in the pool. The formula for volume of a cylinder is pi * r² * height. The radius is ½ the diameter. We can substitute values: Volume of the pool = 3.14 * 8² * 2.2.

    Volume = 442.112³ meters.

    Since the pump removes 15 meters³ per hour, divide 442.112 ÷ 15 = 29.474 hours.

  • Peyton
    8 years ago

    I just did some quick calculating and got 43 hours

    Source(s): My mind
  • Chris
    Lv 7
    8 years ago

    pi*(16/2)^2*2.2 = ?M, ?M/15 = ?Hrs

    Hope that helps.

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