The length of the minute hand of a clock is 14 cm. Find the area in cm2 swept by the minute hand in 5 minutes.
51.3
55.1
60.2
70.8
5 minutes corresponds to 30∘.
Radius = 14 cm. Area of a sector = θ360×π×r2
Area = 30360 × 3.14 × 142 = 51.31 cm2.
The length of the minute hand of a clock is 14 cm. Find the area swept by the minute hand in 5 minutes.