1.

The minute hand of a wall clock is 4.2 cm long .Find the area swept by it in 20 minutes.

Answer»

In 20 MIN it will SWEEP 20/60= 1/3rd AREA of CLOCK
Area of clock = (22/7)*4.2*4.2=55.38cm^2
Therefore it will sweep (1/3)*55.38=18.46 cm^2 area



Discussion

No Comment Found

Related InterviewSolutions