Formulas Bank
- Circumference: $C = 2\pi r$
- Area of Circle: $A = \pi r^2$
- Length of an Arc of a Sector of angle $\theta$:
$$l = \frac{\theta}{360^\circ} \times 2\pi r$$
- Area of Sector of angle $\theta$:
$$\text{Area} = \frac{\theta}{360^\circ} \times \pi r^2 = \frac{1}{2}lr$$
- Area of Segment:
$$\text{Area of Minor Segment} = \text{Area of Sector} - \text{Area of Corresponding Triangle}$$
