Posted by Yoona on Sunday, December 18, 2011 at 2:40pm.
1. A sheet of cardboard 3 ft. by 4 ft. will be made into a box by cutting equalsized squares from each corner and folding up the four edges. What will be the dimensions of the box with largest volume?

calculus  bobpursley, Sunday, December 18, 2011 at 4:10pm
volume= LWH
but 2H+W=3 W=32H
and 2H+L=4 or L=42H
Put those W, L into the V formula, and take the derivative with respect to H. set to zero, and solve for H
This assumes the box has an open top.
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