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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 - Mathematics

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

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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.

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APPEARS IN

NCERT Class 12 Maths
Chapter 6 Application of Derivatives
Q 17 | Page 198
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