Question

An old person moves on a semi circular track of radius 40cm 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.​

Answer 1

Answer:

distance will be 2πR/2

and displacement 2R

Answer 2

RADIUS = 40cm

So the distance will be

CIRCUMFERENCE OF CIRCLE =2 pie r

CIRCUMFERENCE OF SEMI CIRCLE = 2 pie r / 2

2 x 3.14 x 40 / 2

6.28 x 40 / 2

251.2 / 2

125.6

DISPLACEMENT = 40 cm

HOPE IT HELPS YOU...