Find the area of a sector of a circle with radius 6 cm if angle of the sector is 60°.
Let OACB be a sector of the circle making 60° angle at centre O of the circle
Area of sector of angle θ = *πr2
Area of sector OACB = * (6)2
=
= cm2
Hence,
The area of the sector of the circle making 60° at the centre of the circle is cm2