The radius of a circle with centre at O is 6 cm and the central angle of a sector is 40°. Find the area of the sector.
Answer & explanation
Correct answer: option 3
Area of sector = \(\frac{ θ }{360° }\) × πr2
Area of the given sector = \(\frac{ 40° }{360° }\) × π × 62
= (\(\frac{1}{9}\) × π × 36) cm2 = 4π cm2