Find the area of sector in a circle which is made by 14 cm long minute hand in 18 minutes.

61.6 cm2 65 cm2 70 cm2 56 cm2

61.6 cm2

1 circle by a minute hand = 60 mins = 360° ⇒ Angle in 1 minute = \(\frac{360}{60}\) = 6° ⇒ Angle in 18 minutes = 18 × 6 = 108° Now, Area of this sector = πr2\(\frac{θ}{360°}\) ⇒ \(\frac{22}{7}\) × 14 × 14 × \(\frac{108}{360}\) = 61.6 cm2