Two circular metallic discs have a thickness of 15 mm. Their areas are – McqOptions

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1.	Two circular metallic discs have a thickness of 15 mm. Their areas are in the ratio of 9:1. The smaller dia disc is pressed against the bigger disc and rotated around it on a flat surface. How many times will the small disc rotate before it completes one circle of the bigger disc?
A.	3
B.	3π
C.	π
D.	None of these
Answer» D. None of these

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