10. The diameter of a 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 7 per metre, find its total cost.
217
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10. The diameter of a 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 7 per metre, find its total cost.
217
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Answer:
For inside distance :
Radius = 70 m
Circumference = 2πr = 440 m
For outside distance :
Radius = 70+7=77 m
Circumference = 2πr = 484 m
Total length = 440+484=924 m
Cost = Rs.7×924=Rs.6468