The volume of a cylinder of height 11 inches and radius r inches is given by the formula V 11πr?. dV Which is the correct expression for :? dt dV 22πη dt dt dV dr = 11Tr?. dt dt dV dr dh 22Tr dt dt dt dV dr = 22Tr- dt dt dV dt Suppose that the radius is expanding at a rate of 0.8 inches per second. How fast is the volume changing when the radius is 2.2 inches? Use at least 5 decimal places in your answer. answer: cubic inches per second

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