Q2 of 37 Page 13

A sector is cut from a circle of radius 42cm. The central angle of the sector is 150°. Find the length of the arc.


Given: Radius of a circle, r = 42cm


Central Angle of the sector, θ = 150°


To find: Length of the arc i.e. AB


Now,


Length of an arc of a sector of angle θ


⇒ Length of an arc of a sector of angle θ



⇒ Length of an arc of a sector of angle θ


⇒ Length of an arc of a sector of angle θ = 5×22 =110 cm


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