posted by Sara on .
A box with a square base and no top is to be made from a square piece of carboard by cutting 7 in. squares from each corner and folding up the sides. The box is to hold 16128 in3. How big a piece of cardboard is needed?
Your answer is ?in by ?in
Ooops, I think I put this up in the wrong category. If anyone could help me asnwer this, that would be great! :)