A chord of a circle of radius 14 cm makes a right angle at the centre. Find the area of the sector.
Chord AB subtends an angle of 90° at the centre of the circle
Radius of Circle = R = 14 cm
Area of sector of circle of radius R = 
= 22/7 × 14 × 14 × 90/360 cm2 = 154 cm2
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