A circular jogging track forms the edge of a circular lake that has a dia of 2 miles.She walked once around the track at avg speed of 3miles/hr.If t = no of hours it took her to walk comeletely around lake then
1..5<t<.75
2.1.75<t<2.0
3.2.0<t<2.5
4.2.5<t<3.0
5.3<t<3.5

[spoiler]OA = C[/spoiler]