A circular arc subtends angle 150° at the centre ...
A circular arc subtends angle 150° at the centre of a circle of radius 12cm. Calculate the area of the sector of the arc.
30π cm2
60π cm2
120π cm2
150π cm2
Correct answer is B
Area of sector = \frac{\theta}{360°} \times \pi r^{2}
= \frac{150}{360} \times \pi \times 12^{2}
= 60\pi cm^{2}
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