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Which of the following expresses the cir...

Which of the following expresses the circumference of a circle inscribed in a sector. OAB with radius R and AB = 2a ?

A

`2pi(Ra)/(R+a)`

B

`(2piR^(3))/(a)`

C

`2pi(R-a)^(2)`

D

`2pi(R)/(R-a)`

Text Solution

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The correct Answer is:
A
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