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A point is situated on a circle of radiu...

A point is situated on a circle of radius R and with centre O, another circle of radius 3R/2 is described.de ne smaller crescent shaped area intercepted between these circles, a circle of radius `R/8` is placed- If the same circle moves in contact with the original circle of radius R, then find the length of the arc described by its centre in moving from one extreme position to the other.

Text Solution

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The correct Answer is:
`=(7pi R)/(12)`.
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