Circumference of the pool = 28*pi feet
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To calculate the volume in gallons of a round pool, do the following calculation: diameter x diameter x depth x 5.9 Example: 28ft x 28ft x 4ft x 5.9 = 18,502.4 gallons
circumference = pi*17 feet
188.49555922 feet (to eight decimal places)
approx. 25.13 feet
how many linear feet in a 20 foot diameter