A coach writes the batting order of his starting 9 out of the team of 20 on a piece of paper. How many different ways could the list be written? There are ways the list could be written.

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