Area of a Circular Sector
How to find the area of a circular sector: formula, example, and its solution.
A = πr2⋅(θ/360)
A: area of a sector
r: radius of the arc
θ: measure of the arc's central angle
(= measure of the arc)
πr2: area of the circle
θ/360: ratio of (sector)/(circle)
This formula is quite similar to the length of an arc formula.
r = 6, θ = 120
A = π⋅62⋅(120/360)