What is the square foot of a 21 foot round pool
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What is the square foot of a 21 foot round pool
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If 21 feet is the diameter, divide it by 2 to get the radius.
Then use the formula for a circle: area = pi x radius2.
350 sq ft
NOT the 35 the other people answered. A sheet of plywood 4′ by
8′ is 32 Sq ft thats a really small pool.