Examples
Examples
Try the starting example
- Rectangle width in planar units
- 10
- Rectangle height in planar units
- 5
- Outward round buffer distance
- 2
- Buffered rectangle area
- 122.566371
- Added area
- 72.566371
Try another scenario
- Rectangle width in planar units
- 11
- Rectangle height in planar units
- 5
- Outward round buffer distance
- 2
- Buffered rectangle area
- 131.566371
- Added area
- 76.566371
Calculation method
Calculation method
Buffered rectangle area
width×height +2(width+height)r + pi r²; round outer corners.
Added area
2(width+height)r + pi r².
Symbols and units
- a
- Rectangle width in planar units
- b
- Rectangle height in planar units
- c
- Outward round buffer distance
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions & limits
Assumptions & limits
- Exact outward round buffer area for a planar rectangle. General polygon/line/negative buffering is not supported. Quantities are deterministic calculations from supplied observations and assumptions; no external data is fetched. Supported limits: Finite inputs only; numeric fields bounded as labelled. Lists and JSON records are limited to 256 entries unless a stricter tool bound is stated. No automatic design approval, legal conclusion, treatment recommendation or safety certification. Rectangle width in planar units: minimum 1e-12, maximum 1000000000000.0. Rectangle height in planar units: minimum 1e-12, maximum 1000000000000.0. Outward round buffer distance: minimum 0, maximum 1000000000000.0.
Are these inputs private?
These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.