# ee.Feature.perimeter

Returns the length of the perimeter of the polygonal parts of the geometry of a given feature. The perimeter of multi geometries is the sum of the perimeters of their components.

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| Usage | Returns |
|---|---|
| `Feature.perimeter(*maxError*, *proj*)` | Float |

| Argument | Type | Details |
|---|---|---|
| this: `feature` | Element | The feature from which the geometry is taken. |
| `maxError` | ErrorMargin, default: null | The maximum amount of error tolerated when performing any necessary reprojection. |
| `proj` | Projection, default: null | If specified, the result will be in the units of the coordinate system of this projection. Otherwise it will be in meters. |