A rectangular open-topped box is to be made from a rectangular piece of material by cutting-a square from each corner and folding up the sides. The rectangular piece of material is 40 cm long, and the width of the base of the box will be two times as large as it is high. Find the expressions for the height, width, and length of the folded box. Note: the diagram is not drawn to scale. Unfolded Folded X X X X h X X k 1 X X 40 cm Length Choose... Height Choose... 4 Width Choose