The diameter of a cylinder of a 350 cubic inch engine is 86.4 millimeters, with a tolerance of ±0.0025 millimeters. what is the minimum diameter of the cylinder? a. 86.403 mm b. 86.4025 mm c. 86.397 mm d. 86.3975 mm

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