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posted by daisy Tuesday, March 1, 2011 at 8:33pm.
a circular coin has radius of 8.2 what is the circumference rounded to the nearest tenth? please show work
Circumference = 2πr = 2*3.14159*8.2 (mm, I suppose) = 51.522 mm = 51.5 mm (rounded to the nearest 1/10th)
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