SOLUTION: A cylindrical standpipe is to contain 343,000 gal. of water. If its height is to be twice its diameter, what must be its dimensions?

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Question 711770: A cylindrical standpipe is to contain 343,000 gal. of water. If its height is to be twice its diameter, what must be its dimensions?
Answer by Alan3354(69443) About Me  (Show Source):
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A cylindrical standpipe is to contain 343,000 gal. of water. If its height is to be twice its diameter, what must be its dimensions?
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343000 gallons =~ 45852.43 cubic ft
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Vol+=+pi%2Ar%5E2%2Ah
h = 2d = 4r
Vol+=+4pi%2Ar%5E3+=+45852.43
r%5E3+=+11463.1%2Fpi ft
r =~ 15.395 feet
d = 30.79 ft (inside diameter)
h = 61.58 ft