# SQRT

`sqrt( a )`

sqrt | "square root" |

a | a number |

The **sqrt( a )** function is used to return the square root of the number provided.

For example, let's first square a number, then use sqrt() to reverse it:

```
--two ways to square a number
a = 4*4 --16
b = 4^2 --16
c = sqrt(b) --square root
print(c) --4
```

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12 May 2023