Two cars start moving from the same point. One travels south at 56 mi/h and the other travels west at 42 mi/h. At what rate is the distance between the cars increasing three hours later? mi/h Need Help? Read It Watch It Master It 6. [-/1 Points] DETAILS SESSCALCET2 2.7.027. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Gravel is being dumped from a conveyor belt at a rate of 35 ft/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 15 ft high? (Round your answer to two decimal places.) ft/min