If the area of circle is 616 sq cm then its circumference?
78 m
88 m
75 m
70 m
Explanation:
22/7 $r^2$ = 616 => r = 14
2 $\times$ 22/7 $\times$ 14 = 88
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Find the cost of fencing around a circular field of diameter 28 m at the rate of Rs.1.50 a meter?