Important information about Maximizing the Volume of an Open Top Box
A square sheet of cardboard 24 inches on a side is made into a box by cutting squares of equal size from each corner of the sheet and folding the projecting flaps into an open-top box. What should be the length of the edge of any of the cutout squares to give the box maximum volume?
4 inches
4.5 inches
5.5 inches
6.5 inches
7 inches
7.5 inches
8 inches
none of these