# Square Root of π > Square root of the mathematical constant [π][@stdlib/constants/float64/pi].
## Usage ```javascript var SQRT_PI = require( '@stdlib/constants/float64/sqrt-pi' ); ``` #### SQRT_PI Square root of the mathematical constant [π][@stdlib/constants/float64/pi]. ```javascript var bool = ( SQRT_PI === 1.7724538509055160 ); // returns true ```
## Examples ```javascript var SQRT_PI = require( '@stdlib/constants/float64/sqrt-pi' ); console.log( SQRT_PI ); // => 1.7724538509055160 ```