Question

An athlete completes one round of a circular track of diameter 200 m in 40 s. What will be the distance
covered and the displacement at the end of 2 minutes 20 s?​

Answer 1

diameter=200m

radius=100m

In,40sec the athlete complete 1 round

So,2min20sec=140sec

So,in 140sec the athlete will complete 140/40

3.5round

Distance covered in 140sec = 2πr × 3.5

2×22/7×100×3.5

2×22×50

2200

Answer 2

diameter=200m

radius=100m

In,40sec the athlete complete 1 round

So,2min20sec=140sec

So,in 140sec the athlete will complete 140/40

3.5round

Distance covered in 140sec = 2πr × 3.5

=2×22/7×100×3.5

=2×22×50

=2200