Question: A metal box (without a top) is to be constructed from a square sheet of metal that is 20 cm on a side by cutting

A metal box (without a top) is to be constructed from a square sheet of metal that is 20 cm on a side by cutting square pieces of the same size from the corners of the sheet and then folding up the sides. Find the dimensions of the box with the largest volume that can be constructed in this manner

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