Question

If a regular hexagon is inscribed in a circle of radius $r$, then its perimeter is -

• A. $3r$
• B. $6r$
• C. $9r$
• D. $12r$

Answer 1

Answer: (B)

$6r$

Angle subtended by each side of hexagon at centre of circle is ${60}^0.$
Thus six equilateral triangles form and each side is of length $r$ and so perimeter = $6r$.