. 5 An open box with a volume of 80 cmis made by cutting 5 cm squares from each corner of a square piece of metal and then folding up the sides as shown. x cm 5 cm 5 cm 5 cm x cm 2 a) Write an expression for both the length and width of the box in terms of x.
b) Write an equation for the volume of the box in terms of x.
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