(Solved): A machine produces open boxes using square sheets of metal. The machine cuts equal-sized squares me ...

A machine produces open boxes using square sheets of metal. The machine cuts equal-sized squares measuring 4 inches on a side from the corners and then shapes the metal into an open box by turning up the sides. If each box must have a volume of 400 cubic inches, find the length and width of the open box The length and width of the open box are both inches.