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I had some trouble figuring out how to solve this problem. Can anyone help?

A trough with a rectangular cross section is to be made from a long sheet of metal 24 meters wide by turning up strips along each side. Find the amount that must be turned up to give the greatest cross section.

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    Note that this is similar to your other problem. Find an expression for the cross-section (or whatever you're given), try to find another formula you can relate (area for this problem), get things in terms of one variable, find critical points, plug into earlier expressions.2012-06-11
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    Again, remember: drawing a picture is the best way to get started!2012-06-11

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