Program to find the Area and Volume of Icosahedron

Given the side of an Icosahedron. The task is to find the area and volume of the given Icosahedron.
Examples : 

Input : a = 5
Output : Area: 216.506
         Volume: 272.712

Input : a = 10
Output : Area: 866.0254
         Volume: 2181.695

In geometry, an Icosahedron is a regular polyhedron which contains 20 identical equilateral triangular faces, 30 sides, and 12 vertices. 

Formula to find Area and Volume of Icosahedron: Let a be the side of Icosahedron, then 

Surface area of Icosahedron = 
and, Volume of Icosahedron = 

C++

// C++ program to find the Area and
// volume of Icosahedron
#include <bits/stdc++.h>
using namespace std;

// Function to find area of Icosahedron
float findArea(float a)
{
    float area;

    // Formula to calculating area
    area = 5 * sqrt(3) * a * a;

    return area;
}

// Function to find volume of Icosahedron
float findVolume(float a)
{
    float volume;

    // Formula to calculating volume
    volume = ((float)5 / 12) * (3 + sqrt(5)) * a * a * a;

    return volume;
}

// Driver Code
int main()
{
    float a = 5;

    // Function call to find area of Icosahedron.
    cout << "Area: " << findArea(a) << endl;

    // Function call to find volume of Icosahedron.
    cout << "Volume: " << findVolume(a);

    return 0;
}

Java

// Java program to find the Area and
// volume of Icosahedron
import java.io.*;

class GFG {

    // Function to find area of Icosahedron
    static float findArea(float a)
    {
        float area;

        // Formula to calculating area
        area = (float)(5 * Math.sqrt(3) * a * a);

        return area;
    }

    // Function to find volume of Icosahedron
    static float findVolume(float a)
    {
        float volume;

        // Formula to calculating volume
        volume = (float)(((float)5 / 12) * (3 + Math.sqrt(5)) * a * a * a);

        return volume;
    }

    // Driver code
    public static void main (String[] args)
    {
        float a = 5;

        // Function call to find area of Icosahedron.
        System.out.println("Area: " + findArea(a));

        // Function call to find volume of Icosahedron.
        System.out.println("Volume: " + findVolume(a));
    }
}

Python3

# Python3 program to
# find the Area and
# volume of Icosahedron

# import math module
# to use sqrt function
from math import sqrt

# Function to find
# area of Icosahedron
def findArea(a):

    # Formula to calculate area
    area = 5 * sqrt(3) * a * a
    return area

# Function to find
# volume of Icosahedron
def findVolume(a):

    # Formula to calculate volume
    volume = ((5 / 12) *
              (3 + sqrt(5)) *
               a * a * a)
    return volume

# Driver Code
a = 5

# Function call to
# find area of Icosahedron.
print("Area: " , findArea(a))

# Function call to find
# volume of Icosahedron.
print("Volume: " , findVolume(a))

# This code is contributed
# by ihritik

C#

// C# program to find the Area and
// volume of Icosahedron
using System;

public class GFG {

    // Function to find area of Icosahedron
    static float findArea(float a)
    {
        float area;

        // Formula to calculating area
        area = (float)(5 * Math.Sqrt(3) * a * a);

        return area;
    }

    // Function to find volume of Icosahedron
    static float findVolume(float a)
    {
        float volume;

        // Formula to calculating volume
        volume = (float)(((float)5 / 12) * (3 + Math.Sqrt(5)) * a * a * a);

        return volume;
    }

    // Driver code
    static public void Main ()
    {
        float a = 5;

        // Function call to find area of Icosahedron.
        Console.WriteLine("Area: " + findArea(a));

        // Function call to find volume of Icosahedron.
        Console.WriteLine("Volume: " + findVolume(a));
        //Code
    }
}

PHP

<?php
// PHP program to find
// the Area and volume
// of Icosahedron

// Function to find area
// of Icosahedron
function findArea($a)
{
    $area;

    // Formula to
    // calculating area
    $area = 5 * sqrt(3) *
                $a * $a;

    return $area;
}

// Function to find
// volume of Icosahedron
function findVolume($a)
{
    $volume;

    // Formula to
    // calculating volume
    $volume = ((float)5 / 12) *
                (3 + sqrt(5)) *
                  $a * $a * $a;

    return $volume;
}

// Driver Code
$a = 5;

// Function call to find
// area of Icosahedron.
echo "Area: " , findArea($a), "\n";

// Function call to find
// volume of Icosahedron.
echo "Volume: " , findVolume($a);

// This code is contributed
// by jit_t
?>

Javascript

<script>
// javascript program to find the Area and
// volume of Icosahedron

// Function to find area of Icosahedron
function findArea( a)
{
    let area;

    // Formula to calculating area
    area = 5 * Math.sqrt(3) * a * a;

    return area;
}

// Function to find volume of Icosahedron
function findVolume( a)
{
    let volume;

    // Formula to calculating volume
    volume = (5 / 12) * (3 + Math.sqrt(5)) * a * a * a;

    return volume;
}

// Driver Code
    let a = 5;

    // Function call to find area of Icosahedron.
    document.write( "Area: " + findArea(a).toFixed(3) +"<br/>");

    // Function call to find volume of Icosahedron.
    document.write("Volume: " + findVolume(a).toFixed(3));

// This code is contributed by todaysgaurav

</script>

Output:

Area: 216.506
Volume: 272.712

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