Your company are designing metal trays. They will be made out of a sheet of metal which has a perimeter of 80 cm. The box is made by removing squares of side y = 2 cm from each corner of the rectangle and then folding in the sides. A net is shown below. • Your company wants to maximise the capacity of these trays and wants you to investigate what value of x will give you the maximum volume.

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A: Topic- Application of Derivative

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