Cardioid Perimeter Calculator
Cardioidr=a(1+cosθ)perimeter8a,samecoefficientnotmaximumradius2a.
Description
A cardioid perimeter depends on the polar coefficient in r=a times one plus cos theta.
A cardioid perimeter depends on the polar coefficient in r=a times one plus cos theta.1
This tool uses that coefficient rather than the curve's maximum radius.
When to use Cardioid Perimeter Calculator
Use this tool to use that coefficient rather than the curve's maximum radius.
How to use Cardioid Perimeter Calculator and how it works
- Prepare polarCoefficient, with the units, conventions and assumptions below.
- Enter the required fields and run Cardioid Perimeter Calculator.
- Read result.value using the output definitions below.
- Correct any rejected inputs and rerun; interpret the result within the stated model and its assumptions.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| polarCoefficient | Positive length coefficient a in r=a*(1+cos(theta)); not the maximum radius. | number | Required; strictly positive; finite; other constraints below |
Require a positive polar coefficient a in r=a*(1+cos(theta)). Return 8*a as the full cardioid perimeter in the coefficient's length unit. This convention matters because other named cardioid radii can differ by a factor of two.
perimeter=8*a Apply the input ordering, units and branch conditions stated above.
| Output field | Meaning | Value type |
|---|---|---|
| result | Object containing the calculated or selected fields below. | object |
| result.value | Cardioid perimeter in the polar coefficient's length unit. | number |
{
"input": {
"polarCoefficient": 1
},
"output": {
"result": {
"value": 8
}
}
}Limitations and assumptions
The calculation uses the supplied observations and model inputs. It does not collect measurements, select a reference population or coefficient, or establish that the model applies to the actual case. The stated branch conditions and output units remain part of the result.
All fields require explicit values. Unexpected fields, wrong types, nonfinite numbers and sparse arrays are rejected. Alignment, bounds and supported-token rules are explained above; extremely large inputs or nonfinite results can also fail. Input errors differ from successful false comparisons, unavailable-domain flags and empty match lists.
Alternative or Complementary methods
Use Deltoid Area Calculator for a complementary operation: A deltoid's area depends on whether its scale means the rolling-circle radius or an outer radius.
Use Cardioid Area Calculator for a complementary operation: A cardioid area depends on its stated polar scale convention.
References
-
Cardioid Perimeter Calculator — tool.io
Similar or alternative tools
- Deltoid Area Calculator
A deltoid's area depends on whether its scale means the rolling-circle radius or an outer radius.
- Cardioid Area Calculator
A cardioid area depends on its stated polar scale convention.