An open-top rectangular box is being constructed to hold a volume of 250 in³. The base of the box is made from a material costing 5 cents/in². The front of the box must be decorated, and will cost 10 cents/in². The remainder of the sides will cost 3 cents/in². Find the dimensions that will minimize the cost of constructing this box. Front width: in. Depth: in. Height: in.