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11 May, 20:58

A circular backyard pool has a diameter of 26

feet and is 4

feet deep. One cubic foot of water has a capacity of approximately 7.48 gallons. If water costs $2

per thousand gallons, how much, to the nearest dollar, will it cost to fill the pool

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Answers (1)
  1. 11 May, 21:42
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    Volume of the pool = πr²h

    Volume of the pool:

    π (13) ² (4) = 2123.72 ft³

    Amount of water:

    1 ft³ = 7.48 gallon

    2123.72 ft³ = 2123.72 x 7.48

    2123.72 ft³ = 15885.4 gallons

    Cost to fill the pool:

    1000 gallon = $2

    15885.4 gallons = $32

    Answer: $32
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