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0 3 are both LOCAL MAX 20. A box with an open top is constructed from a rectangular piece of cardboard 2m x 3m by

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0 3 are both LOCAL MAX 20. A box with an open top is constructed from a rectangular piece of cardboard 2m x 3m by cutting a square from each of the four corners and bending up the sides. Determine the the dimensions of the box if it is to have a maximum volume. (6 marks) X V = 1wh

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