Area of a circular segment with central angle $\theta°$ and radius $r$ is —

• a$\dfrac{\theta}{180°}\pi r^{2}$
• b$\dfrac{\theta}{360°}\pi r^{2}$
• c$\dfrac{\theta}{360°}\cdot 2\pi r$
• d$\dfrac{1}{2}\pi r^{2}\theta$