Assertion: circumference | /r/HasProperty | the walk-around
Facets:
Source sentences:
text: Circumference (C) is "the walk-around": C is about 3x diameter or 6x radius (adjust by 5% to be closer) ... for your example, radius (r) is C/6 or 3" (subtract 5% or 0.15 to get 2.85").