Arc Length of a Circle

Written by Jerry Ratzlaff on . Posted in Plane Geometry

circle arc 1AA sector is a fraction of the area of a circle.

 

arc Length of a Circle  formulas

\(\large{ l =   \theta \; r \;\; }\)  (when \(\; \theta \;\) is in radians) 
\(\large{ l =  \theta \;   \frac {  \pi } { 180 } \; r  \;\;  }\)  (when \(\; \theta \;\) is in degrees) 

Where:

\(\large{ l }\) = length

\(\large{ \pi }i\) = Pi

\(\large{ r }\) = radius

\(\large{ \theta }\) = angle

 

Tags: Equations for Length