A runner completes one round of a circular track of diameter 400 m in 40 s. What will be the distance covered?

200 m

No worries! We‘ve got your back. Try BYJU‘S free classes today!

400 m

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

100 m

No worries! We‘ve got your back. Try BYJU‘S free classes today!

800 m

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B
400 m

$R a d i u s o f t h e c i r c l e, r = 200 m$
$C i r c u m f e r e n c e o f t h e c i r c l e = 2 π r$
$= 2 \times \frac{22}{7} \times 200 = \frac{8800}{7} m$
$S p e e d o f t h e r u n n e r = \frac{(\frac{8800}{7})}{40} = \frac{220}{7} m / s$
Distance covered in 2 min 20 s i.e.,
$140 s = \frac{220}{7} \times 140$ $= 4400 m$

Suggest Corrections

Similar questions

A runner completes one round of a circular track of diameter 400 m in 40 s. What will be the distance covered and the displacement respectively at the end of 2 minutes 20 s?

Q. An athlete completes one round of a circular track of diameter 200m in 40 sec . What will be the distance covered

Q. A runner completes one round of a circular track of diameter 400 m in 40 s. What will be the distance covered and the displacement respectively at the end of 2 minutes 20 s?

There is a circular track of length 400m. If you cover 270 $^{\circ}$ of the track, what is the length you have covered while running?

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?

Join BYJU'S Learning Program

A runner completes one round of a circular track of diameter 400 m in 40 s. What will be the distance covered?

The correct option is B 400 m Radius of the circle, r=200m Circumference of the circle=2πr =2×227×200=88007 m Speed of the runner=(88007)40=2207 m/s Distance covered in 2 min 20 s i.e., 140s=2207×140 =4400m