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The Rate of Change of the Area of a Circle with Respect to Its Radius R At R = 6 Cm is - CBSE (Commerce) Class 12 - Mathematics

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Question

The rate of change of the area of a circle with respect to its radius r at r = 6 cm is

(A) 10π

(B) 12π

(C) 8π

(D) 11π

Solution

The area of a circle (A) with radius (r) is given by,

Hence, the required rate of change of the area of a circle is 12π cm2/s.

The correct answer is B.

  Is there an error in this question or solution?

APPEARS IN

 NCERT Solution for Mathematics Textbook for Class 12 (2018 to Current)
Chapter 6: Application of Derivatives
Q: 17 | Page no. 198
Solution The Rate of Change of the Area of a Circle with Respect to Its Radius R At R = 6 Cm is Concept: Rate of Change of Bodies Or Quantities.
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