Defining regular polygons - class-IX
Casual Mode - Take your time!
1 / 23
Correct
0
Incorrect
0
Score
0%
Multiple Choice
If $R$ is the radius of circumscribing circle of a regular polygon of $n$ sides, then $R =?$
- $\dfrac{a}{2} sin (\dfrac{\pi}{n})$
- $\dfrac{a}{2} cos (\dfrac{\pi}{n})$
- $\dfrac{a}{2} cosec (\dfrac{\pi}{n})$
- $\dfrac{a}{2} cosec (\dfrac{\pi}{2n})$