Find the distance covered by a 7 cm long minute hand of a clock in an hour.
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The, distance will be π*r where r is the radius or the length of the minute arm. On solving we will get distance to be 22/7*7 = 22 cm.
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find the perimeter
perimeter of the circle(the motion of the minute hand is circular)=πr=π×7=22cm(taking π as 22/7)
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