The inner circumference of a circular track is 220 m. The track is 7 m wide everywhere. Calculate the cost of putting up a fence along the outer circle at the rate of 2 per meter.
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circumference of the inner circular track=220
radius for the same will be = x
3.14*2x=220
2x=70m
x=35m
radius = 35m
when we consider the outer circular track its radius will be x+7m i.e. 35+7=42m
circumference for fencing of the outer circular track =2*22/7*42
=264m
cost of fencing the outer circle =rupees 2 per meter
total cost =Rs.(264*2)
=Rs.528
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