Geometry
Circular Arc Length
Length of an arc subtending angle θ (deg).
Formula
Formula
L = r · θ_rad
Variables
| Symbol | Definition | Type & range | Units | Role |
|---|---|---|---|---|
| r | radius | real number (ℝ) | — | input |
| θ | angle in degrees | computed result | — | result |
Try it yourself
Interactive calculator
Worked examples
Example 1
Givenradius r = 5, angle θ (deg) = 90
Result7.853981634
Example 2
Givenradius r = 10, angle θ (deg) = 45
Result7.853981634