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The area of a regular polygon of n sides...

The area of a regular polygon of n sides is (where r is inradius, R is circumradius, and a is side of the triangle)

A

`(R+r) tan ((pi)/(2n))`

B

`2(R+r)tan((pi)/(2n))`

C

`(R+r)sin((pi)/(2n))`

D

`2(R+r)cot((pi)/(2n))`

Text Solution

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The correct Answer is:
B
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