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# Ruby CMath sqrt() Method with example

• Last Updated : 07 Jan, 2020

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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