Question

A cyclist goes around a circular track once every 2 minutes. If the radius of the

circular track is 105 meters, calculate his speed ?​

Answer 1

Answer:

Given :-

Radius of circular track, r = 105 m

Time taken, t = 2 min = 2 × 60 = 120 seconds

To Find :-

Speed.

Formula to be used :-

Circumference of circle = 2πr

Speed = Distance/Time

Solution :-

Putting all the values, we get

Circumference of circular track = 2πr

⇒ Circumference of circular track = 2 × 22/7 × 105

⇒ Circumference of circular track = 660 m

Now,

Speed = Distance/Time

⇒ Speed = 660/120

⇒ Speed = 5.5 m/s

Hence, the speed is 5.5 m/s.

Answer 2

Answer:

speed of cyclist = 5.5 m/s