The area of a sector of a circle of 6 cm radius is 15π sq.cm. Find the measure of the arc and length of the arc corresponding to the sector.
Let the measure of arc be θ
Area of sector = 15π
Radius, r = 6 cm
As we know,
⇒ θ = 150°
Also, 
⇒ l = 5π
∴ The length of the arc is equal to 5π.
9