The area of circular plot is 3850 m2. Find the radius of the plot. Find the cost of fencing the plot at `10 per metre.

Area of circle is ?r^2=3250
Radius r=?(3250/?)=?(3250?7/22)
=32.16 m
Fencing cost = Rs.10/m
Total fencing cost= 2?r x 10
=2???32.16?10
= ? 2021

Area of circle is 22/7 x r^2=3250?m^2
Radius r=square root(3250/(22/7))
=sqrt(3250x7/22)?
=32.16 m?
Fencing cost = Rs.10/m?
Total fencing cost= 2 x 22/7 x r x 10?
=2x22/7x32.16x10?
= Rs. 2021

Area of circular path = 3850m^2
?r^2 = 3850m^2
22/7*r^2 = 3850m^2
r^2 = 3850 *7/22
r^2 = 1225
r = 35
Perimeter of circular path = 2?r =2?22?7?35 = 220
Cost of fencing the plot at ?10 per metre = 220?10 =2200