The radius of a circle is increasing at the rate of 0.02cms -1 . Find
MATHEMATICS
JAMB 2013
The radius of a circle is increasing at the rate of 0.02cms-1. Find the rate at which the area is increasing when the radius of the circle is 7cm.
- A. 0.75cm2S-1
- B. 0.53cm2S-1
- C. 0.35cm2S-1
- D. 0.88cm2S-1
Correct Answer: D. 0.88cm2S-1
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