## Algebra and Trigonometry 10th Edition

We know that the area is equal to: $$A=\pi r^2 \times \frac{\theta}{2\pi \ radians}$$ We know that the area is equal to: $$A=r^2 \times \frac{\theta}{2}$$ $$A=6^2 \times \frac{\pi/3}{2}=18.85$$