Posted by Alex on Friday, August 14, 2009 at 9:16pm.
From 4:10 to 6:45, the minute hand has moved two complete circles and 35 minutes, which translate to
2*2π+35/60*2π
=31π/6 radians
Note: It seems that Sophie, Nina, Parker, Paula, Alex, Casey, Annalee, Julia, Mary, Rachel and Elle are working on the same computer. Or perhaps a single person is behind all of them.
If the idea is to get more answers by using different names, it will not work. I personally prefer to deal with one single name for continuity reasons.
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