program to find the area of a Pentagon

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Program to find the area of a pentagon

The Pentagon is defined as a polygon which has 5 sides that are equal. The 5 angles present in the Pentagon are also equal. A Pentagon can be divided into 5 similar triangles. The measurement of each interior angle in a regular pentagon 108 degrees.

The Formula to calculate the area of the Pentagon is,

Where

s is the side of the Pentagon.
a is the apothem length.

Algorithm

Create variables 's' and 'a' and assign its value as 10 and 6.
Create variable area_pentagon equals to (5/2)X(s)X(a) as per the formula of calculating the area of the Pentagon.

Complexity

O(1)

Solution

C Program

#include 
int main()
{
   int s=13;
   int a=5;
   float area_pentagon=(5.0/2.0)*s*a;
   printf("Area of the pentagon=%0.1f",area_pentagon);
}

Output:

Area of the pentagon=162.5

PHP Program

<?php  
   $s=13;
   $a=5;
   $area_pentagon=(5/2)*$s*$a;
    echo "Area of the pentagon=";
    echo $area_pentagon;
?>

Output:

Area of the pentagon=162.5

Java Program

public class pentagon{
    public static void main(String args[])
    {
   int s=13;
   int a=5;
   float area_pentagon=(float)(5.0/2.0)*s*a;
        System.out.println("Area of the pentagon="+area_pentagon);
     }
}

Output:

Area of the pentagon=162.5

C# Program

using System;				
public class Program
{
	public static void Main()
	{
	int s=13;
	int a=5;
	  double area_pentagon=(double)(5.0/2.0)*s*a;
       Console.WriteLine("Area of the pentagon="+area_pentagon);
	}
}

Output:

Area of the pentagon=162.5

Python Program

s=13
a=5
area_pentagon=(5.0/2.0)*s*a
print("Area of the pentagon="+str(area_pentagon))

Output:

Area of the pentagon=162.5

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program to find the area of a Pentagon