Question

Find the area of sector of a circle with radius $4cm$ and of angle ${30}^o$

Answer 1

Area of sector with angle subtended as $\theta$ is $\frac{\pi \theta r^2}{{360}^{\circ }}$

Required area is $\frac{\pi \left({30}^{\circ }\right)(4{)}^2}{{360}^{\circ }}=\frac{4\pi }{3}=4.16$