a 3 m wide road runs around a circular park whose circumference is 132m. find the cost of the fencing the outer boundary of a road at the rate of $10per meter
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Answer:
2×π×x
Let x be radius of inner circle. Then given circumference=132m
Equate with formula to get x =10. 5 m and add 3m to get outer radius and put in formulae
2×π×x
to get circumference 88.4m and multiply with 10rs to get cost of boundary 844rs
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