FieldengGeospatial & Survey
Three-Point Area
Triangle area from three measured side lengths (Heron).
Geospatial & SurveyConstruction & Trades
Triangle area from three measured side lengths (Heron).
App id: GEO-18. Reference version 1.0.
How to fill it
Fill the inputs. The tool shows the outputs.
On the tool screen, Calc is the working sheet. Presets stores values you reuse. Reference is the formula, assumptions, and provenance below.
Formula
A = √(s(s−a)(s−b)(s−c))Inputs
| Name | Unit |
|---|---|
| Side a | m |
| Side b | m |
| Side c | m |
Outputs
| Name | Unit |
|---|---|
| Area (hero result) | m2 |
| Perimeter | m |
Diagnose
This tool does not attach diagnose observations.
Assumptions
- Planar triangle from measured sides.
Provenance
- Quick field triangle without building a polygon. Sides must satisfy the triangle inequality.