RelatedRatesProblems: Problem 7 Previous Problem Problem List Next Problem (1 point) Gravel is being dumped from a conveyor belt at a rate of 20 f't31min. It forms a pile in the shape of a right circular cone whose base diameter and height are always the same. How fast is the height of the pile increasing when the pile is 14 ft high? The height is increasing at H! ftn'min. (Give the exact value, or at least three places after the decimal.)