-1 When a stone is dropped into water, the radius of a circular wave is increasing at the rate of 0.2 ms -¹. Find the rate at which the area is increasing when the radius is 0.07 m.
-1 When a stone is dropped into water, the radius of a circular wave is increasing at the rate of 0.2 ms -¹. Find the rate at which the area is increasing when the radius is 0.07 m.
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