Question

A boy after going around a circular track of radius 'R' comes back to the starting point. Find total distance covered by him

Answer 1

Radius of circle = R
Given that :he goes round the circle
Distance covered on a circular path = 2(π) (r)
Where r = radius
So, the distance covered by the boy = 2πR

Answer 2

as distance is scalar the total distance is 4piR