1.

the sumof theradii of inscribedandcircumscribedcirculesfor ann sidesregularpolygonof sidea, is

Answer»

`a/2cot ((pi)/(2 n))`
`a cot((pi)/(2 n))`
`a/4 cot ""((pi)/(2N))`
`a cot "" ((pi)/( n))`

Answer :A


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