Skip to content
Related Articles
Program to Calculate the Perimeter of a Decagon
• Last Updated : 01 Apr, 2021

Given side of a Decagon, the task is to find out the Perimeter of the Decagon.
Explanation : In geometry, a decagon is a ten-sided polygon or 10-gon. A regular decagon has all sides of equal length and each internal angle will always be equal to 144 degrees. Examples

```Input : S = 5
Output : The Perimeter of Decagon is : 50

Input : S = 8
Output : The Perimeter of Decagon is : 80```

The formula for finding the Perimeter of the Decagon is:

```Perimeter = 10 * S

where "S" is the side of the Decagon```

Below is the program to find perimeter of decagon:

## C++

 `// C++ program to Calculate the Perimeter of a Decagon``#include ``using` `namespace` `std;` `// Function for finding the perimeter``void` `CalPeri()``{``    ``int` `s = 5, Perimeter;` `    ``Perimeter = 10 * s;` `    ``cout << ``"The Perimeter of Decagon is : "``                                ``<< Perimeter;``}` `// Driver code``int` `main()``{``    ``CalPeri();` `    ``return` `0;``}`

## C

 `// C program to Calculate the Perimeter of a Decagon``#include ` `// Function for finding the perimeter``void` `CalPeri()``{``    ``int` `s = 5, Perimeter;` `    ``Perimeter = 10 * s;` `    ``printf``(``"The Perimeter of Decagon is : %d"``,``                                    ``Perimeter);``}` `// Driver code``int` `main()``{``    ``CalPeri();` `    ``return` `0;``}`

## Java

 `/*package whatever //do not write package name here */``// Java program to Calculate the Perimeter of a Decagon` `import` `java.io.*;` `class` `GFG {` `// Function for finding the perimeter``static` `void` `CalPeri()``{``    ``int` `S = ``5``, Perimeter;` `    ``Perimeter = ``10` `* S;` `    ``System.out.println(``"The Perimeter of Decagon is : "``+``                                ``Perimeter);``}` `// Driver code``    ``public` `static` `void` `main (String[] args) {``            ``CalPeri();``    ``}``}``//This Code is contributed by ajit`

## Python3

 `# Python3 program to Calculate``# the Perimeter of a Decagon` `# Function for finding the``# perimeter``def` `CalPeri():``    ``s ``=` `5``    ``Perimeter ``=` `10` `*` `s` `    ``print` `(``"The Perimeter of Decagon is : "``           ``, Perimeter)` `# Driver code``if` `__name__ ``=``=` `'__main__'``:``    ``CalPeri();` `# This code is contributed by``# Surendra_Gangwar`

## C#

 `// C# program to Calculate the``// Perimeter of a Decagon``using` `System;` `class` `GFG``{` `// Function for finding the perimeter``static` `void` `CalPeri()``{``    ``int` `S = 5, Perimeter;` `    ``Perimeter = 10 * S;` `    ``Console.WriteLine(``"The Perimeter of "` `+``                           ``"Decagon is : "``+``                                ``Perimeter);``}` `// Driver code``public` `static` `void` `Main ()``{``    ``CalPeri();``}``}` `// This Code is contributed``// by anuj_67`

## PHP

 ``

## Javascript

 ``
Output:
`The Perimeter of Decagon is : 50`

Attention reader! Don’t stop learning now. Get hold of all the important DSA concepts with the DSA Self Paced Course at a student-friendly price and become industry ready.  To complete your preparation from learning a language to DS Algo and many more,  please refer Complete Interview Preparation Course.

In case you wish to attend live classes with industry experts, please refer Geeks Classes Live

My Personal Notes arrow_drop_up