Question

An open box is to be made from a 20 cm by 29 cm piece of...

An open box is to be made from a 20 cm by 29 cm piece of cardboard by cutting out squares of equal size from the four corners and bending up the sides. If ? denotes the length of the sides of these squares, express the volume ? of the resulting box as a function of ? .

?(?)= ____ cm/s.

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