How to Calculate Arc Length?

A simple tutorial on what is arc length? and the best ways to determine the arc length of the circle.

Finding Arc Length of a Circle

Arc length refers to the Length of the arc along the portion of the circle. It is a part of the total circumference of the circle. So Arc Length can be found by knowing the Circumference and Central Angle of the Circle. It is calculated by considering a part of the whole circle. Use our online short tutorial to learn how to calculate arc length of the circle with simple example and images.
How To Calculate Arc Length Of Circle
Arc Length Formula:
The formula to determine the arc length of a circle is given below which uses the values of radius and central angle of the arc.
Arc Length = 2πR (C / 360 )

Where,
R - Radius
C - Central angle of the arc in degrees
Arc Length Of Circle Formula
Arc Length Example:
Finding the arc length of a circle is simple with the below given formula.

Step 1:
Given,
Radius - 10
Central Angle - 64 Radians
Arc Length Of Circle Example
Step 2: Substitute the given values in the formula.
Arc Length = 2πR (C / 360 )
= 2 x 3.14 x 10 (64 / 360)
= 62.8 (0.18)
= 11.16
The arc length of the circle is 11.16
Arc Length Of Circle Example Calculation


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