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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 (a) 10π (b) 12π c) 8π d) 11π |
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Answer» 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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