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20 ft round diameter is 10 ft in radius. Volume = pi x radiuis squared x height (in feet)

3.1592654 x 10 x 10 x 42/12 = 1105.74 cubic feet.

7.48 gallons per cubic ft gives 8,271.53 gallons for 42" depth.

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13y ago
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Q: How many gallons are in a 20 ft round pool with 42 in walls?
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