Program to find the Perimeter of a Regular Polygon

Given the number of sides ‘n’ and the length of side ‘s’ of a regular polygon, the task is to find out the Perimeter of this polygon.

Examples:

Input: n = 7, s = 10
Output: Perimeter : 70
Since the sides are 7,
Hence the given polygon is Heptagon.
Therefore. Perimeter = 7*10 = 70

Input: n = 5, s = 2.5
Output: Perimeter : 12.5
Since the sides are 5,
Hence the given polygon is Pentagon.
Therefore. Perimeter = 5*2.5 = 12.5

Approach: In geometry, a regular polygon is a closed figure with all sides eqial. It is a two-dimensional figure.



Perimeter of a Regular Polygon = Number of sides * Length of each side

Below is the implementation of the above approach:

C++

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// C++ program to find the
// perimeter of a regular polygon
  
#include <iostream>
using namespace std;
  
// Function to calculate the perimeter
float Perimeter(float s, int n)
{
    float perimeter = 1;
  
    // Calculate Perimeter
    perimeter = n * s;
  
    return perimeter;
}
  
// driver code
int main()
{
  
    // Get the number of sides
    int n = 5;
  
    // Get the length of side
    float s = 2.5, peri;
  
    // find perimeter
    peri = Perimeter(s, n);
  
    cout << "Perimeter of Regular Polygon"
         << " with " << n << " sides of length "
         << s << " = " << peri << endl;
  
    return 0;
}

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C














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// C program to find the 


// perimeter of a regular polygon 


  


#include <stdio.h> 


  


// Function to calculate the perimeter 


float Perimeter(float s, int n) 


{ 


    float perimeter = 1; 


  


    // Calculate Perimeter 


    perimeter = n * s; 


  


    return perimeter; 


} 


  


// driver code 


int main() 


{ 


  


    // Get the number of sides 


    int n = 5; 


  


    // Get the length of side 


    float s = 2.5, peri; 


  


    // find perimeter 


    peri = Perimeter(s, n); 


  


    printf("Perimeter of Regular Polygon\n"


           " with %d sides of length %f = %f\n", 


           n, s, peri); 


  


    return 0; 


} 



















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Java














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// Java program to find the 


// perimeter of a regular polygon 


  


class GFG { 


  


    // Function to calculate the perimeter 


    static double Perimeter(double s, int n) 


    { 


        double perimeter = 1; 


  


        // Calculate Perimeter 


        perimeter = n * s; 


  


        return perimeter; 


    } 


  


    // Driver method 


    public static void main(String[] args) 


    { 


  


        // Get the number of sides 


        int n = 5; 


  


        // Get the length of side 


        double s = 2.5, peri; 


  


        // find perimeter 


        peri = Perimeter(s, n); 


  


        System.out.println("Perimeter of Regular Polygon"


                           + " with " + n + " sides of length "


                           + s + " = " + peri); 


    } 


} 



















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Python3














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# Python3 program to find the 


# perimeter of a regular polygon 


  


  


# Function to calculate the perimeter 


def Perimeter(s, n): 


    perimeter = 1


    # Calculate Perimeter 


    perimeter = n * s 


  


    return perimeter 


  


# driver code 


if __name__== '__main__': 


    # Get the number of sides 


    n = 5


  


    #Get the length of side 


    s = 2.5


    # find perimeter 


    peri = Perimeter(s, n) 


  


    print("Perimeter of Regular Polygon with"


          ,n,"sides of length",s,"=",peri) 


      


# This code is contributed by 


# SURENDRA_GANGWAR 



















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C#














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// C# program to find the  


// perimeter of a regular polygon  


using System; 


  


class GFG 


{ 


// Function to calculate the perimeter  


static double Perimeter(double s, int n)  


{  


    double perimeter = 1;  


  


    // Calculate Perimeter  


    perimeter = n * s;  


  


    return perimeter;  


}  


  


// Driver Code  


static public void Main () 


{ 


    // Get the number of sides  


    int n = 5;  


  


    // Get the length of side  


    double s = 2.5, peri;  


  


    // find perimeter  


    peri = Perimeter(s, n);  


  


    Console.WriteLine("Perimeter of Regular Polygon" +  


                      " with " + n + " sides of length " +  


                        s + " = " + peri);  


} 


} 


  


// This code is contributed by Sachin 



















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PHP














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<?php 


// PHP program to find the  


// perimeter of a regular polygon 


  


// Function to calculate the perimeter  


function Perimeter($s, $n)  


{  


    $perimeter = 1;  


    


    // Calculate Perimeter  


    $perimeter = $n * $s;  


    


    return $perimeter;  


}  


    


    // driver code  


      


    // Get the number of sides  


    $n = 5;  


    


    // Get the length of side  


    $s = 2.5;  


    


    // find perimeter  


    $peri = Perimeter($s, $n);  


    


    echo "Perimeter of Regular Polygon"


         ," with ", $n," sides of length "


         ,$s," = ",$peri;  


              


// This code is contributed by ANKITRAI1 


?> 



















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Output:


Perimeter of Regular Polygon 
with 5 sides of length 2.500000 = 12.500000







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