SOLUTION: How many gallons in a 13' circular pool 3' deep?

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Question 311383: How many gallons in a 13' circular pool 3' deep?
Answer by nerdybill(7384) About Me  (Show Source):
You can put this solution on YOUR website!
How many gallons in a 13' circular pool 3' deep?
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One US gallon is 0.133681 cubic feet
Volume of pool= (pi)r^2(depth)
Volume of pool= (3.14)(13/2)^2(3)
Volume of pool= 397.995 cubic feet
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Gallons:
397.995/0.133681 = 2977.2 gallons