A circular path is made from two concentric circular rings in such a way that the smaller

A circular path is made from two concentric circular rings in such a way that the smaller ring when allowed to roll over the circumference of the bigger ring, it takes three full revolutions. If the area of the pathway is equal to n times the area of the smaller ring, then n is equal to
(a) 4
(b) 6
(c) 8
(d) 10

Anurag Mishra Professor Asked on 20th February 2016 in Maths.
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Answer: (b) 6

Anurag Mishra Professor Answered on 20th February 2016.
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