Two people are looking at the top of a totem pole, which is 55 feet tall. When the two people are looking at the top of the totem pool they are exactly 200 feet apart. The person closest to the totem pole has an angle of elevation to the top of the totem pool of 26 degree, as shown.

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