An athlete completes one round of a circular track of radius 10 meter in 40 sec.the distance covered by him in 2min.20 sec.?

Time=2m and 20 seconds ( converts it into second)

s0 time in seconds = 140 seconds

now

v=w*r = 2*22/7*100

40 seconds = 2 * 22/7 *100

1 second = 2 * 22/7 * 100/40

140 second = 2 * 22/7 * 100/40 * 400

so, it gives = 2200 m

so the distnace is 2200 m

and the dispalcement is 200 m