a fence is to be erected around a circular field. The cost of fencing comes to ₹ 2640 at the rate of ₹ 12 per meter. Find the radius of the circular field.
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Step-by-step explanation:
Circumference of the field = 2640/12 = 220 m
2×π×r = 220
⇒ r = 220/(2π) = 35 m
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