Mathematics for IGCSE & O level - Mensuration (Section 9 - No. 40)
The area of a circle sector is equal to?
(θ/360) * πr²
πr²
πr²h
2πr
解释
The area of a sector is calculated as a fraction of the total circle area, proportional to the central angle. The formula is (θ/360) * πr²