Find the cost of fencing around a circular field of diameter 28 m at the rate of Rs.1.50 a meter?
Rs.150
Rs.132
Rs.100
Rs.125
Explanation:
2 $\times$ 22/7 $\times$ 14 = 88
88 $\times$ 1 1/2 = Rs.132
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The radius of a circular wheel is 1.75 m, how many revolutions will it make in traveling 1 km?