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OpenStudy (anonymous):
a box is to be made by cutting out the corners of a square piece of cardboard and folding the edges up. If 3 inch squares are to be cut out of the corners and the box contains 243 cubic inches, what is the length of a side of the original cardboard square?
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OpenStudy (j2lie):
I think you have to multiply 3 by 4 because there is four sides in a cardboard. And then you add to 243.
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