Sagitta of a Circular Arc
Find the minor-arc height above a chord.
Your numbers
Sagitta
Use consistent units. The result follows the assumptions you enter.
Scenario comparison
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Formula
h=r−√(r²−c²/4)
Find the minor-arc height above a chord.
Worked example
- Radius (m)
- 5
- Chord length (m)
- 8
- Sagitta
- 2 m
Scope and limitations
Use consistent units. The result follows the assumptions you enter.
Inputs are checked for missing values and allowed ranges. A result outside the finite numeric range is not displayed. Rounding affects display, while the calculation uses the model’s numeric precision.
Check your units and assumptions before relying on a result. Changing a label does not convert a currency or physical unit.
Formula version: f5342f883739 · Example checked: