Question

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

Answer 1

Answer:

area of path in outer most= area of circle 1-area of circle 2

=πr^2-πr^2,

π(r^2-r^2)

22/7(5929-4900)

22/7×1029

22×147

3234m^2

total cost =7×3234

=22638