An athelete runs alongs a circular track of radius 14 m with a speed of 11 m `s^(-1)` then the time taken by the althete to complete 6 rounds is ______

Options

A. 48 s
B. 0.8 min
C. 0.0133 h
D. All of the above

Answer

D

Explanation

Speed of the athlete = `11ms^(-1)`
Radius of circular track = 14 m
Number of rounds completed = 6

Total distance traced by the athlete = `6xx2pir`
= `6xx2xx22/7xx14`
Speed = `("distance")/("time")`
Time taken = `(6xx2xx22xx14)/(7xx11)=48s`
= 0.8 min = 0.0133 h