Question

A person is running along a circular track of area 65 π m2 with a constant speed. Find the displacement in 15 seconds if he has ti complete the race in 30 seconds.

Answer 1

if he complets his race in 30 sec
then in 15 sec he will be in half circle
area is 65πm2 then displacement will be it's radius
area = πr2
65π=πr2
r = √65
displacement= √65m2