A road roller makes 200 rotations in covering 2200 m.Find the radius o – InterviewSolution

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1.

A road roller makes 200 rotations in covering 2200 m.Find the radius of the roller.

Answer»

In one rotation roller covers 2 pi r

In 200 rotation it will cover 200 × 2 pi × r

= 400 pi r

So, According to question

2200 = 400 pi × r

r = 2200/400 pi

r = 22/4pi

r = (22 × 7)/4 × 22

r = 7/4 m

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