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chapter 2.8- just b (a) HA is the area of a circle with radius r and the circle expands as time passes, find 1: in

chapter 2.8- just b

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(a) HA is the area of a circle with radius r and the circle expands as time passes, find 1: in terms of %. (b) Suppose oil spills from a ruptured tanker and spreads in a circular pattern. If the radius of the oil spill increases at a constant rate of 2 m/s, exactly how fast (in mZ/s) is the area of the spill increasing when the radius is 22 m? 2/5 xm

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