5. In a circle of radius 21 cm, an arc subtends an angle of 60° at the centre. Find:
(ii) area of the sector formed by the arc
We know that the area of the sector is given by:-
Thus the area of the sector is 231 cm2.
Board Exam Date 2025 Live: Bihar Class 10, 12 model papers out, time table soon; updates on CBSE, UP
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