Posted by alexandra on Thursday, October 27, 2011 at 2:44pm.
arc = radius * angle
5x+2 = r * (3x+14)
You still need to know the radius. If not, then
5x+2 = 3rx + 14r
5x-3rx = 14r-2
x = (14r-2)/(5-3r)
Keeping the same angle, a larger circle generates a longer arc.
If r=1, then x = 6
If r = 2, x = -12
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