Defining regular polygons - class-IX

Time: 00:00:00

Attempted

Not Attempted

Marked For Review

Attempted & Reviewed

Question 1 of 23

If $R$ is the radius of circumscribing circle of a regular polygon of $n$ sides, then $R =?$

Select Your Answer:

$\dfrac{a}{2} sin (\dfrac{\pi}{n})$

$\dfrac{a}{2} cos (\dfrac{\pi}{n})$

$\dfrac{a}{2} cosec (\dfrac{\pi}{n})$

$\dfrac{a}{2} cosec (\dfrac{\pi}{2n})$

Mark for Review

Attempted

Not Attempted

Marked for Review

Attempted & Reviewed

Current