Posted by daisy on 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

math  MathMate, Tuesday, March 1, 2011 at 10:02pm
Circumference
= 2πr
= 2*3.14159*8.2 (mm, I suppose)
= 51.522 mm
= 51.5 mm (rounded to the nearest 1/10th)