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

rlanz 9. Find up 72 dt. Jo

Water is being poured into an inverted cone at the rate of 4 cubic centimeters per second. The cone has a maximum radius of 6cm and a height of 30 cm. At what rate is the height increasing when the height is 3cm? 1 The volume of a cone is v 3 71 1 30

I = 4t? dt