If the radius of the circle changes at the rate of \(\rm-\frac{2}{\pi}\ m/sec\), at what rate does the circle's area change when the radius is 10 m?

If the radius of the circle changes at the rate of \(\rm-\frac{2}{\pi

1.	If the radius of the circle changes at the rate of \(\rm-\frac{2}{\pi}\ m/sec\), at what rate does the circle's area change when the radius is 10 m?
A.	40 m2/sec
B.	30 m2/sec
C.	-30 m2/sec
D.	-40 m2/sec
Answer» E.

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If the radius of the circle changes at the rate of \(\rm-\frac{2}{\pi}\ m/sec\), at what rate does the circle's area change when the radius is 10 m?

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