Q. 34.4( 54 Votes )
The radius of a c
We know that area of a circle (A) is A = πr2
Then, Rate of change of the area with respect to time is given by,
It is given that
Thus, when r = 10cm
Therefore, the rate at which the area of the circle is increasing when the radius is 10 cm is 60π cm2/s.
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