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# Pi

> Returns the mathematical constant π = 3.14159…

Returns the mathematical constant π = 3.14159…

## Usage

```
Pi()
```

## Example

```
Pi() * [Radius]^2
```

* Find the area of circles indicated in the \[Radius] column

![](https://files.buildwithfern.com/sigma.docs.buildwithfern.com/1408b1007cdf38fddd6c4b67d8e6c3b94f15d7644650f3586fd891a3f5ccd935/assets/docs-images/3f4fef1-777.png)