sqrt() / Reference / Processing.org

Name

sqrt()

Description

Calculates the square root of a number. The square root of a number is always positive, even though there may be a valid negative root. The square root s of number a is such that s*s = a. It is the opposite of squaring.

Examples

```
size(400, 400);
noStroke();
float a = sqrt(104976);   // Sets 'a' to 324
float b = sqrt(10000);  // Sets 'b' to 100
float c = sqrt(256);   // Sets 'c' to 16
rect(0, 100, a, 40);
rect(0, 180, b, 40);
rect(0, 260, c, 40);
```