# Math Class Fields with Examples in C#

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The Math class in C# has Math.E and Math.PI fields. Let us see an example of both the fields −

## Math.E

### Syntax

It is the natural logarithmic base specified by the constant e. The syntax is as follows −

public const double E = 2.71828182845905;

### Example

Let us now see an example −

using System;
public class Demo{
public static void Main(){
double d = Math.E;
Console.WriteLine("Math.E = " + d);
}
}

### Output

This will produce the following output −

Math.E = 2.71828182845905

## Math.PI

The Math.PI field represents the ratio of the circumference of a circle to its diameter, specified by the constant, π.

### Syntax

The syntax is as follows −

public const double PI = 3.14159265358979;

### Example

Let us now see an example −

using System;
public class Demo{
public static void Main(){
double d = Math.PI;
Console.WriteLine("Math.PI = " + d);
}
}

### Output

This will produce the following output −

Math.PI = 3.14159265358979
Updated on 08-Nov-2019 06:52:17