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you can treat the pool as a circle that is extruded to a height

if the diameter is 33ft, then the radius is 16.5ft.

volume is pi times radius squared

16.5ft * 16.5ft = 272.25 sq ft

pi * 272.5 sq ft = 855.14 sq ft

now just multiply 855.14 by the height in feet and you have the volume.

For example, 855.14 sq ft * 3 ft = 2565.41 cubic feet

now convert cubic feet to gallons:

1 cu ft = 7.4805 gal

so 2565.41 cubic feet * 7.4805 gal/cu ft = 19,190.6 gal

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14y ago

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Q: How much water is needed to fill a 33 ft diameter swimming pool?
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