Answer:
20π m or 62.83 m
Explanation:
The formula for Circumference is C = 2πr
All you need to find for the formula is the radius, which is half of the diameter.



Then plug the radius into the formula and solve for Circumference


or 
<span>Otona Kawaii means adult cute, as far as I know.</span>
It says you need to have 1000. Hope it helps, I guess .....
Robert walton is arctic seaafarer