Q15 of 68 Page 15

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


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