Question: what is the formula for finding the area of an arc?
Answer: A central angle which is subtended by a major arc has a measure larger than 180°. The arc length formula is used to find the length of an arc of a circle; l=rθ l = r θ , where θ is in radians. Sector area is found A=12θr2 A = 1 2 θ r 2 , where θ is in radians.