Solve this
Example 3.1 An old person moves on a semi-circular track of radius 40.0 m during a morning walk. If he starts at one end of the track and reaches at the other end, find the distance covered and the displacement of the person.
Kindly refer the similar link below.
https://www.meritnation.com/ask-answer/question/a-person-moves-on-a-semicircular-track-of-radius-42-m-dur/motion/9468323
https://www.meritnation.com/ask-answer/question/a-person-moves-on-a-semicircular-track-of-radius-42-m-dur/motion/9468323