The minute hand of a clock is √21 cm long. Find area described by the minute hand on the face of clock between 7 am and 7:05 am
Radius of minute hand (r) = √21 cm
For 1hr = 60 min, minute hand completes one revolution = 360°
60 min = 360°
1 min = 6°
From 7 am to 7:05 am it is 5 min angle subtended = 5 x 6°=30°=θ
