Program for Surface Area of Octahedron

Given the sides of Octahedron then calculate the surface area.

Examples:

Input  : 7
Output : 169.741

Input  : 9
Output : 280.59

An regular octahedron has eight faces, which are all in the shape of equilateral triangles.The area of an octahedron is 2 multiplied by the length of an edge squared multiplied by the square root of three.

Formula:
Surface area= 2*(sqrt(3))*(side*side)

C++

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// CPP Program to calculate 
// surface area of Octahedron
#include <bits/stdc++.h>
using namespace std;
  
// utility Function
double surface_area_octahedron(double side)
{
    return (2*(sqrt(3))*(side*side));
}
  
// Driver Function
int main()
{
    double side = 7;
    cout << "Surface area of octahedron ="
        << surface_area_octahedron(side)
        << endl;
}

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Java














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// Java Program to calculate  


// surface area of Octahedron. 


  


import java.io.*; 


import java.util.*; 


  


class GFG { 


      


// utility Function 


static double surface_area_octahedron(double side) 


{ 


    return (2*(Math.sqrt(3))*(side*side)); 


} 


    public static void main (String[] args) { 


    double side = 7; 


    System.out.println("Surface area of octahedron ="


                    + surface_area_octahedron(side));  


      


    } 


} 


  


// This code is contributed by Gitanjali. 



















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Python3














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# Python Program to calculate  


# surface area of Octahedron. 


import math 


  


# utility Function 


def surface_area_octahedron( side): 


  


    return (2*(math.sqrt(3))*(side*side)) 


  


# driver code  


side = 7


print("Surface area of octahedron =" , 


      surface_area_octahedron(side)) 


  


# This code is contributed by Gitanjali. 



















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C#














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// C# program to calculate 


// surface area of Octahedron. 


using System; 


  


class GFG { 


  


    // utility Function 


    static double surface_area_octahedron(double side) 


    { 


        return (2 * (Math.Sqrt(3)) * (side * side)); 


    } 


      


    // Driver code 


    public static void Main() 


    { 


        double side = 7; 


        Console.WriteLine("Surface area of octahedron ="


                        + surface_area_octahedron(side)); 


    } 


} 


  


// This code is contributed by vt_m. 



















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PHP














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<?php 


// PHP Program to calculate  


// surface area of Octahedron 


  


// utility Function 


function surface_area_octahedron($side) 


{ 


    return (2 * (sqrt(3)) *  


           ($side * $side)); 


} 


  


// Driver Code 


$side = 7; 


echo("Surface area of octahedron ="); 


echo( surface_area_octahedron($side)); 


  


// This code is contributed by vt_m. 


?> 



















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Output: 


Surface area of octahedron =169.741





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