C# Math.Sqrt() – Examples

In this tutorial, we will learn about the C# Math.Sqrt() method, and learn how to use this method to find the square root of given number, with the help of examples.

Sqrt(Double)

Math.Sqrt(d) returns the square root of a specified number d.

Syntax

The syntax of Sqrt() method is

Math.Sqrt(Double d)

where

ParameterDescription
dThe number whose square root is to be found.

Return Value

The method returns Double value.

Example 1 – Sqrt(Double)

In this example, we will find the square root of some numbers using Sqrt() method.

C# Program

using System;
 
class Example {
    static void Main(string[] args) {
        Double d, result;

        d = 2;
        result = Math.Sqrt(d);
        Console.WriteLine($"Sqrt({d}) = {result}");

        d = 3;
        result = Math.Sqrt(d);
        Console.WriteLine($"Sqrt({d}) = {result}");

        d = 4;
        result = Math.Sqrt(d);
        Console.WriteLine($"Sqrt({d}) = {result}");

        d = 9;
        result = Math.Sqrt(d);
        Console.WriteLine($"Sqrt({d}) = {result}");

        d = 16;
        result = Math.Sqrt(d);
        Console.WriteLine($"Sqrt({d}) = {result}");

        d = 0.25;
        result = Math.Sqrt(d);
        Console.WriteLine($"Sqrt({d}) = {result}");

        d = Double.NegativeInfinity;
        result = Math.Sqrt(d);
        Console.WriteLine($"Sqrt({d}) = {result}");

        d = Double.PositiveInfinity;
        result = Math.Sqrt(d);
        Console.WriteLine($"Sqrt({d}) = {result}");
    }
}

Output

Sqrt(2) = 1.4142135623731
Sqrt(3) = 1.73205080756888
Sqrt(4) = 2
Sqrt(9) = 3
Sqrt(16) = 4
Sqrt(0.25) = 0.5
Sqrt(-∞) = NaN
Sqrt(∞) = ∞

Conclusion

In this C# Tutorial, we have learnt the syntax of C# Math.Sqrt() method, and also learnt how to use this method with the help of C# example programs.