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| Math Central | Quandaries & Queries |
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Question from William: I need to provide 712 cubic feet to water storage capacity. If I use 15 inch diameter pipe, what would the length need to be to provide the capacity? |
Hi William.
The pipe is just a long cylinder. The volume of a cylinder is V = π R2 L, where R is the radius of the pipe (7.5/12 feet) and L is the length of the pipe in feet.
So you have
712 = π (7.5/12)2 L
Solve for L to finish the problem.
Hope this helps,
Stephen.
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