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The length of a minute hand of a wall clock is 7 cm. What is the area swept by it in 30minutes?

Asked by Srishti Mallick 9th September 2013, 9:53 PM
Answered by Expert
Answer:
Angle formed in 30 minutes = 180 degrees
Radius = 7 cm
Therefore, 
required area swept = pi * r^2 * theta/ 360o = 77 cm2
Answered by Expert 9th September 2013, 11:04 PM
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