Question

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​

Answer 1

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