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December 20, 2014

Homework Help: math problem

Posted by Anonymous on Wednesday, April 4, 2012 at 2:09pm.

A simple rain gutter is constructed using a sheet of aluminum that is 40cm wide. The edges are turned up to form right angles. Determine the depth of the gutter that will maximize the cross-sectional area (allowing the greatest amount of water to flow).

I don't know where and how to start.

please help and thank you

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