Question

880m wire is requried to fence a circular plot 5time over area of plot.

Answer 1

circumference = 2π r = 880/5
⇒r = (880×7)/(22×5×2)
⇒r = 28 m
so, area of plot = π r²
                         =(22×28×28)/7
                         =2464 m²

Answer 2

For 5 times = 880 m is required
For 1 time   = 880/5
                  =  176 m is required
Circumference = 176 m
2πr                  =  176
r (radius)          =  176 * 2 * (7/22)
r                       =  112 m
           Area of the plot = πr²
                                    = 22*112*112/7
                                    = 39424 m²