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You need the formula for the volume of a cylinder: Volume of a cylinder= "pie"x "r squared"x "height" Volume of your Swimming Pool = (22/7) x (7.5) x (7.5) x (4) = 707.14 CUBIC FEET Convert to Gallons => 7.481 x 707.14 = 5,290 GALLONS Keep in mind that this is a perfect cylinder. If the sides of your pool are sloping then your pool contains less water and you should probably calculate the lower bounds with a 7 foot radius. This can be a significantamount of waterwhen adding chlorine and algaecide.

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17y ago

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