Question

A sector of a circle of radius 4 cm contains an angle of ${30}^{\circ }$. Find the area of the sector.

Answer 1

Area of sector $=\pi r^2\times \frac{\theta }{{360}^o}$

$=\frac{22}{7}\times 4^2\times \frac{30}{360}$

$=4.19c{m}^2$