## Precalculus (10th Edition)

$4.71\text{ cm}^2$
Here, $r$ denotes the radius of the sector of the circle. The Area $A$ of sector can be computed using the fomrula $A=\frac{\theta}{360}\cdot \pi \cdot r^2$ where $\theta$ is the central angle in degrees. Use the formula above to obtain $A=\frac{60}{360}\cdot \pi \cdot 3^2=1.5\pi\approx4.71\text{ cm}^2$