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Question

Find the circumference of a circle whose area is 301.84 cm2


Solution

Let r be the radius of the circle.

Now, area =πr2=301.84

227r2=301.84

r2=96.04

r=9.8 cm

Hence, circumference =2πr=2×227×9.8=61.6 cm


Mathematics
RD Sharma
Standard X

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