Answer:
Distance between the observer and the red car is

Explanation:
Diameter of field = 500 m
Radius of field =

Let R be the radius and the speed at which the car completes race be w
So,

Car finished 5 laps in minutes = 30
Car finished 1 lap in minutes =

So,

Refer the attached figure
Angle between car and observer = wt
So, Distance between the observer and the red car is give as A sin wt
So, Distance between the observer and the red car=
