../geometry/images/circle-prop.js?mode=arclen
The distance along the arc (part of the circumference of a circle, or of any curve).
For a circle:
Arc Length = θ × r  
(when θ is in radians)
Arc Length = (θ × π/180) × r  
(when θ is in  degrees)
The distance along the arc (part of the circumference of a circle, or of any curve).
For a circle:
Arc Length = θ × r  
(when θ is in radians)
Arc Length = (θ × π/180) × r  
(when θ is in  degrees)