Question

Marc runs from one end to the other end of a semicircular track whose radius is 140m.What is the distance covered and what is the displacement

Answer 1

For a full circle circumference would be 2πr and then for a half circle πr would be the
circumference
so the radius is 140 m
so the circumference would be
22/7*140
440m

so the distance covered would be 440m

Answer 2

Answer: distance =440m

displacement= 280m

Explanation: circumference of semi circle = 22/7 x 140 = 440

dis= 140 + 140 = 280m