Question

the diameter of circular park is 56m.on its outside there in 3m wide path,running around it.find the cost of turfing the path at Rs 4.50sq. m.

Answer 1

diameter of circular path is 56 metres radius is 28 metre
area of circle =πr^2
=22/7×28×28
=2464m^2
area of second circle is r=31
=22/7×31×31
=3020.28
area of path area1-area2
3020.28-2464

=556.28
so expense=556.28×4.5

=2503.28 rupees