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++

// 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;
}

Java

// 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.

Python3

# 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.

C#

// 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.

PHP

<?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.
?>

Javascript

<script>

// JavaScript program to calculate
// surface area of Octahedron.

// Utility Function
function surface_area_octahedron(side)
{
    return (2 * (Math.sqrt(3)) * (side*side));
}

// Driver Code
let side = 7;

document.write("Surface area of octahedron =" +
               surface_area_octahedron(side));

// This code is contributed by avijitmondal1998

</script>

Output: 

Surface area of octahedron =169.741

Time complexity : O(1) 
Auxiliary Space : O(1)