The area of a sector of a circle is 231 cm² and its central angle is 60°

MATHEMATICS · Single correct · CBSE · Mathematics · Areas Related to Circles · Areas Related to Circles

Problem

The area of a sector of a circle is 231 cm² and its central angle is 60°. Determine the radius of the circle. (a)

15\,\text{cm}

(b)

21\,\text{cm}

(c)

37\,\text{cm}

(d)

14\,\text{cm}