When wrapping a birthday gift in the shape of a rectangular prism for his mother, Kenji adds an additional 2.5 square inches of gift wrap to allow for overlap. How many square inches of
gift wrap will Kenji use to wrap a gift 3.5 inches long, 18 inches wide, and 2 inches?

Gravel is being dumped from a conveyor belt at a rate of 25 ft3/min, and its coarseness is such that it forms a pile in the shape of a cone whose base diameter and height are always equal. how fast is the height of the pile increasing when the pile is 14 ft high? (round your answer to two decimal places.) ft/min