Question

A road roller makes 200 rotations in covering 2200 meters find the radius of the roller

Answer 1

200 rotations = 2200 m
1 rotation = 2200/200
= 11 m
Therefore circumference of roller is 11 m
Circumference = 2 * pi * r
11 = 2 * 3.14 * r
1.7515 = r
Radius = 1.7515