In a circle of radius 21 cm, an arc subtends an angle of 60° at the centre. The area of the sector formed by the arc is:
A. 200 cm2
B. 220 cm2
C. 231 cm2
D. 250 cm2
Answer:C
In a circle of radius 21 cm, an arc subtends an angle of 60° at the centre. The area of the sector formed by the arc is:
A. 200 cm2 B. 220 cm2 C. 231 cm2 D. 250 cm2
Explanation: The angle subtended by the arc = 60°