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Lv 4
? asked in Science & MathematicsMathematics · 6 years ago

How many gal of water in a round 18 x 4pool?

2 Answers

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  • Puzzling
    Lv 7
    6 years ago

    Is that a diameter or a radius? And are those feet, meters, yards?

    I'm going to assume that's a diameter of 18 feet and a height of 4 feet.

    The volume of a cylinder is:

    V = πr² h

    r : radius (9)

    h : height (4)

    V = π * 9² * 4

    V = 324π

    V ≈ 1,018 cubic feet

    A cubic foot holds about 7.48 gallons of water.

    V = 1,018 cu. ft x 7.48 gal/cu.ft.

    ≈ 7,615 gallons

    Answer:

    About 7,615 gallons

  • Rita the dog
    Lv 7
    6 years ago

    Hard to say with no units given on 18 nor on 4.

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