# Ruby CMath sqrt() Method with example

sqrt method is a Math class method in Ruby which is used to calculate the square root of the given value.

Syntax: Math.sqrt(z)

Parameter: Here, z is the value whose square root is to be calculated.

Returns: This method returns the square root of the given number.

Below programs illustrate the use of above-discussed method:

Example 1:

 `# Ruby code for sqrt() method ` `require ``'cmath'` ` `  `# Initialize values  ` `a = ``9` `b = ``78``.``15` ` `  `# Printing result   ` `puts ``"Square root value of a : #{CMath.sqrt(a)}\n\n"`   `puts ``"Square root value of b : #{CMath.sqrt(b)}\n\n"`

Output:

```Square root value of a : 3.0

Square root value of b : 8.84024886527523
```

Example 2:

 `# Ruby code for sqrt() method ` `require ``'cmath'` ` `  `# Initializing value  ` `a = ``7841` `b = ``1234` ` `  `# Printing result   ` `puts ``"Sqrt root value of a : #{CMath.sqrt(a)}\n\n"`   `puts ``"Sqrt root value of b : #{CMath.sqrt(b)}\n\n"`

Output:

```Sqrt root value of a : 88.54942122905152

Sqrt root value of b : 35.12833614050059
```

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