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How to calculate the area of a sphere in C#

Theodore Kelechukwu Onyejiaku

Overview

The area of a sphere is the total area covered by the sphere's outer surface. In C#, we can calculate it using the sphere's radius.

Syntax

4 * Math.PI * r * r
Syntax for calculating area of a Sphere in C#

Parameters

  • Math.PI: This is an built-in value that represents the mathematical value Pi.
  • r: This represents the radius of the sphere.

Example

using System;
class HelloWorld
{
    // create function to get the areas
    static void GetArea(double r){
        double area = 4 * Math.PI * r * r;
        Console.WriteLine("The area of the sphere with radius "+r+" is "+area);
    }
    
    // main method
    static void Main()
    {
      // create radius of some spheres
      double r1 = 10;
      double r2 = 1.5;
      double r3 = 4.5;
      double r4 = 8;

      // get the area of the spheres
      GetArea(r1);
      GetArea(r2);
      GetArea(r3);
      GetArea(r4);
    }
}
Get the area of a Sphere in C#

Explanation

  • Line 5: We create a method called GetArea(). It takes the sphere's radius, calculates the area, then prints the result to the console screen.
  • Lines 14–17: In the Main method, we create the radii of some spheres.
  • Lines 20–23: We call the GetArea() method, and display the results on the console.

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Theodore Kelechukwu Onyejiaku
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