Arc length is the length of the curved line which makes up the arc. Measuring the length of an arc with a ruler is impossible unless its a straight line. In this situation arc length formula comes very handy to figure out the exact length of the arc.

As shown in the below figure when we know the central angle and radius of the arc we can calculate the arc length of that typical arc.

In our below online arc length calculator, enter the central angle and radius of the arc and click calculate to find the length of an arc for the given circle.

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