Question

the diameter of the circular park is 140 m. around it on the outside ,a path having the width of 7 m is constructed .if the path has to be fenced from inside and outside at the rate of rs 7 per metre,find its total cost.

Answer 1

we have to find the inside distance and outside distance.
for inside distance , radius = 140/2 =70 m
length of circumference =2π×radius
                                       =2×(22/7)×70
                                       =440 m
now, outside distance 
radius = 70 +7 = 77 m
length of circumference = 2π× radius
                                       = 2×(22/7)×77
                                       = 484 m
total length = 440 +484 =924 m
cost = Rs 7× 924 = Rs 6468

Answer 2

Step-by-step explanation:

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