# PI Function

The PI function is one of the math and trigonometry functions. The function returns the mathematical constant pi, equal to 3.14159265358979. It does not require any argument.

The PI function syntax is:

PI()

To apply the PI function,

1. select the cell where you wish to display the result,
2. click the Insert Function icon situated at the top toolbar,
   or right-click within a selected cell and select the Insert Function option from the menu,
   or click the icon situated at the formula bar,
3. select the Math and trigonometry function group from the list,
4. click the PI function,
5. press the Enter button.

The result will be displayed in the selected cell.