# Math. HELP!

A cylinder is to be made of circular cross-section with a specified volume. Prove that if the surface area is to be a minimum, then the height of the cylinder must be equal to the diameter of the cross-section of the cylinder.
Maybe it's the wording, but I have not been able to crack this one for the past half-hour!

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1. Patience,
You just posted the same question 5 minutes ago

http://www.jiskha.com/display.cgi?id=1290049020

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posted by Reiny

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