- How many times will the wheel of a car rotate in a journey of 2002 m, if the radius of the wheel is 49 cm?
Given,
Distance = 2002m = 200200cm
Radius of wheel = 49 cm
circumference of wheel = 2pi r
= 2*22/7*49
= 308 cm
distance covered by wheel in one rotation = circumference of wheel
so, total no. of rotation = total distance/distance covered in one rotation
= 200200/308
=650 revolutions
hence wheel of the car will rotate 650 times in the journey of 2002 m if radius of wheel is 49cm.