what should be the length of rope which is tied to one end to cow and other end to holder.so,that cow can graze 9856 sq.m?
Options
A) 56 m B) 64 m C) 88 m D) 168 m E) 102 m
πr^2=9856   r^2=[7/22*9856]=[448*7]=[64*49]=[8*7]^2=56^2   r=56 m   answer 56 m
<result>A</result>
what should be the length of rope which is tied to one end to cow and other end to holder.so,that cow can graze 9856 sq.m?