# 10+ C Sharp Programs to Calculate Area of a Circle

This post contains a total of 10+ C Sharp Program Examples with Source Code to Calculate the Area of a Circle. All these Circle Area Calculator programs are made using C Sharp.

You can use the source code of these examples with credits to the original owner.

## C Sharp Programs to Calculate Area of Circle

### 1. By Noah Tait

Made by Noah Tait. Improved Area of Circle Calculator. Source

```Please input a value for radius
The area of this circle is 254.34```
``````using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
const double Pi = 3.14;
Console.WriteLine("The area of this circle is " + area);
}
}
}
``````

### 2. By K.S.S. Karunarathne

Made by K.S.S. Karunarathne. A simple Program to Calculate the Area of a Circle. Source

```10
314```
``````using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
double pi = 3.14;
Console.WriteLine(pi*diameter*diameter);

}
}
}``````

### 3. By Mr Freeman

Made by Mr Freeman. Basic C# Program that can find the area of a circle by using its radius. Source

```11
379.94```
``````using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
const double pi = 3.14;

Console.Write("");
double r;
double result;
result = r*r*pi;
Console.WriteLine(\$"{result}");
}
}
}``````

### 4. By Abdulmuizz Hamzat

```12
The diameter of the circle is 24 meters, the circumference is 75.36 meters and the area is 452.16 square meters.```
``````using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
const double PI = 3.14;

periCircle = (PI * dia);

Console.WriteLine("The diameter of the circle is {0} meters, the circumference is {1} meters and the area is {2} square meters.", dia, periCircle , areaCircle);
}
}
}``````

### 5. By Sagheb

```13
530.66```
``````using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
const double pi = 3.14;
Console.WriteLine(circleArea);
}
}
}``````

### 6. By Elia John

```14
The Area of the circle is: 615.752160103599```
``````using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
/*
you give me the lenght of the radius of a circle (a double number), and I give you its area.
*/
double Pi=Math.PI;
double Area=Pi*r*r;
Console.Write ("The Area of the circle is: ");
Console.WriteLine (Area);
}
}
}
``````

### 7. By Faizal Khan

```15
706.5```
``````using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
double area = r*r*3.14;
Console.WriteLine("Area of circle is {0}", area);
}
}
}``````

### 8. By Ghufran Sbiai

Made by Ghufran Sbiai. Basic Area of a Circle Program. Source

```16
803.84```
``````using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Sololearn
{
class Program
{
static void Main(string[] args)
{
double Pi=3.14;

double Area = Pi * r * r;

Console.WriteLine(Area);
}
}
}
``````

### 9. By David Tamaratare Oghenebrume

Made by David Tamaratare Oghenebrume. Source

```Enter a radius of your choice:17
Area of the circle with radius 17 is 907.92027688745```
``````using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Sololearn
{
class Program
{
static void Main(string[] args)
{
//Click RUN and enter a number then click SUBMIT

}
}
}
``````

### 10. By Julian Aung

Made by Julian Aung. Simple Circle Area Finder C# Program. Source

```18
254.34```
``````using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
double Pi = 3.14;
Console.WriteLine(circleArea);

}
}
}``````

### 11. By William Ainley

```19
1134.262```
``````using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace system
{
class Program
{
static void Main(string[] args)
{
const double pi = 3.142;
}
}
}
``````