---
url: >-
  /statelake/scripting-reference/functions-and-procedures/mathematical-functions/pi.md
---

# Pi

**Pi** is represented by the symbol π, and is the ratio of the circumference of a circle to its diameter.

The function **Pi** returns the value 3.14159265358979.

To 39 decimal places, **Pi** is 3.141592653589793238462643383279502884197.

**Declaration**: Function Pi : Extended;

Example

```pascal
procedure OnMapEvent(var Value:Variant);
begin
 //Returns 3.14159265358979
  Value := Pi;
end;
```