A sector of a circle has area and subtends an angle of at the centre

MATHEMATICS · Subjective · GCSE · Mathematics · Geometry and Measures · Geometry and Measures

Problem

A sector of a circle has area

77\,\text{cm}^2

and subtends an angle of

105^\circ

at the centre. Determine the radius of the circle. (Use

\pi = \tfrac{22}{7}