Question

Question Part
Points
Submissions Used
A stone is dropped into a lake, creating a circular ripple that travels outward at a speed of 40 cm/s. Find the rate at which the area within the circle is increasing after each of the following.
(a) after 2 s
cm2/s

(b) after 5 s
cm2/s

(c) after 6 s
cm2/s

Oct 13, 2014

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