# Square Root of 2π > Square root of the mathematical constant [π][@stdlib/constants/float64/pi] times 2.

## Usage ```javascript var SQRT_TWO_PI = require( '@stdlib/constants/float64/sqrt-two-pi' ); ``` #### SQRT_TWO_PI Square root of the mathematical constant [π][@stdlib/constants/float64/pi] times `2`. ```javascript var bool = ( SQRT_TWO_PI === 2.5066282746310007 ); // returns true ```

## Examples ```javascript var SQRT_TWO_PI = require( '@stdlib/constants/float64/sqrt-two-pi' ); console.log( SQRT_TWO_PI ); // => 2.5066282746310007 ```

[@stdlib/constants/float64/pi]: https://www.npmjs.com/package/@stdlib/constants/tree/main/float64/pi