The volume of a cylinder of height 12 inches and radius r inches is given by the formula V Which is the correct expression for = 12πr² dV ? dt dV dr dh = 24πr- dt dt dt dV dr = 24πη dt dV = dt 0 dt dV 24πη dt dt dV dr = 12πr 2 dt dt Suppose that the radius is expanding at a rate of 0.6 inches per second. How fast is the volume changing when the radius is 2.9 inches? Use at least 5 decimal places in your answer.

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