Question

A boy covers a circle of radius 100m in 100 s .Find average speed​

Answer 1

Answer:

6.28m/s

Explanation:

Radius of lap = 100m

Circumference =2πR

                         =200π

                         =628m

Time taken to cover one lap = 100s

Hence average speed =$\frac{628}{100}$

                                      =6.28m/s

Answer 2

i think you got idea from this  pic .