differentiation

Question: Radius of a circle is increasing uniformly at the rate of $3cm/\sec .$ The rate of increasing of area when radius is $10cm$ , will be



1) $\pi \,c{{m}^{2}}/s$
2) $2\pi \,c{{m}^{2}}/s$
3) $10\pi \,c{{m}^{2}}/s$
4) None of these
Solution: Explanation: No Explanation
Application of Derivatives

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