The minute hand of a clock is 
cm long. Find the area described by the minute hand on the face of the clock between 7.00AM and 7.05AM.
Length of minute hand =
Angle subtend by minute hand in 1 minute = 
= 6°
Angle subtend by minute hand in 5 minute (7-7.05) = 5×6 = 30°
So,
Area described by minute hand in 5 minute = 
= 5.5cm2
15