Test Academy | If the circumference of the circle is changing at the rate of 5 cm/s then what will be rate of change of area of the circle if the radius is 6cm 20 cm²/s, 40 cm²/s, 50 cm²/s, 30 cm²/s

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If the circumference of the circle is changing at the rate of 5 cm/s then what will be rate of change of area of the circle if the radius is 6cm

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20 cm²/s
40 cm²/s
50 cm²/s
30 cm²/s

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