In this article, we will see how to calculate the area of a circle in C# using method.

The area of a circle can be evaluated using the formula:

Area of circle = pi * r * r //where r is the radius of circle

**Example:**

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class Program { // Method Name --> GetCircleArea() // Return Type ---> double static double GetCircleArea(double radius) { const float pi = 3.14F; double area = pi * radius * radius; return area; } static void Main(string[] args) { Console.Write("Enter Radius : "); double r=Convert.ToDouble(Console.ReadLine()); double area=GetCircleArea(r); Console.WriteLine("Area of Circle : "+area); Console.ReadKey(); } } |

**Output:**