Tina N Suzanne P Weiland Calc Problem ATTEMPT 5 :(

Mr. Weiland passes out a really hard pop quiz. The kids take one look at it and burst into tears. Mr. Weiland laughs and pulls out his conical Tear-Collector 5000 that has a height of 10 inches and a diameter of 10 inches. He walks up to the girl in front and extends his tear collector. Her tears fall at a rate of 144 inches cubed per day. What is the rate of change for the height (in inches/min) of the tears when the height is 6 inches?