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.
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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 Your input: 9 The area of this circle is 254.34
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine("Please input a value for radius");
const double Pi = 3.14;
double radius;
radius = Convert.ToDouble(Console.ReadLine());
Console.WriteLine("Your input: " + radius);
double area = (Pi * (radius * radius));
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;
using System.Threading.Tasks;
namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
double pi = 3.14;
double diameter =Convert.ToDouble(Console.ReadLine());
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;
using System.Threading.Tasks;
namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
const double pi = 3.14;
double radius;
Console.Write("");
double r;
r = Convert.ToDouble(Console.ReadLine());
double result;
result = r*r*pi;
Console.WriteLine($"{result}");
Console.ReadLine();
}
}
}4. By Abdulmuizz Hamzat
Made by Abdulmuizz Hamzat. Source
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;
using System.Threading.Tasks;
namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
const double PI = 3.14;
double rad, dia, periCircle, areaCircle;
rad = 12;
dia = (2 * rad);
periCircle = (PI * dia);
areaCircle = (PI * rad * rad);
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
Made by Sagheb. Source
13 530.66
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
const double pi = 3.14;
double radius =Convert.ToDouble(Console.ReadLine());
double circleArea = pi*radius*radius;
Console.WriteLine(circleArea);
}
}
}6. By Elia John
Made by Elia John. Source
14 The Area of the circle is: 615.752160103599
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
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 r=Convert.ToDouble(Console.ReadLine());
double Area=Pi*r*r;
Console.Write ("The Area of the circle is: ");
Console.WriteLine (Area);
}
}
}
7. By Faizal Khan
Made by Faizal Khan. Source
15 706.5
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
int r = Convert.ToInt32(Console.ReadLine());
// r is radius
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;
using System.Threading.Tasks;
namespace Sololearn
{
class Program
{
static void Main(string[] args)
{
double Pi=3.14;
double r = Convert.ToDouble(Console.ReadLine());
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;
using System.Threading.Tasks;
namespace Sololearn
{
class Program
{
static void Main(string[] args)
{
//Click RUN and enter a number then click SUBMIT
double area,radius;
Console.WriteLine("Enter a radius of your choice:");
radius=Convert.ToDouble(Console.ReadLine());
area= Math.PI * radius * radius;
Console.WriteLine("Area of the circle with radius {0} is {1}",radius,area);
}
}
}
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;
using System.Threading.Tasks;
namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
double Pi = 3.14;
int diameter =Convert.ToInt32(Console.ReadLine());
int radius = diameter/2;
double circleArea = Pi*radius*radius;
Console.WriteLine(circleArea);
}
}
}11. By William Ainley
Made by William Ainley. Source
19 1134.262
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace system
{
class Program
{
static void Main(string[] args)
{
const double pi = 3.142;
int rad = Convert.ToInt32(Console.ReadLine());
Console.WriteLine(rad*rad*pi);
}
}
}