# Program to calculate Volume and Surface area of Hemisphere

Calculate volume and surface area of a hemisphere.
Hemisphere :
In geometry, it is an exact half of a sphere. We can find many of the real life examples of the hemispheres such as our planet Earth can be divided into two hemisphere the southern & northern hemispheres. Volume of Hemisphere : Volume of a Hemisphere is nothing but the amount of space occupied by the hemisphere. It is also defined as the quantity of three dimensional space enclosed by the boundary of the Hemisphere.

Surface area : The number of square units that will exactly cover the surface of a hemisphere.
surface area = volume = Examples :

```Input :  Radius = 7
Output : Volume = 718.378
Surface Area = 307.876

Output : Volume = 2787.64
Surface Area = 760.265
```

## C++

 `// CPP Program to calulate volume and ` `// and surface area of a Hemisphere. ` `#include ` `using` `namespace` `std; ` `// Initializing value of pi ` `#define pi 3.141592653589793 ` ` `  `// Function to calulate volume ` `void` `volume(``float` `r) ` `{ ` `    ``float` `volume = ``float``(2 * pi * ``pow``(r, 3)) / ``float``(3); ` `    ``cout << ``"Volume = "` `<< volume << endl; ` `} ` `// Function to calulate surface area ` `void` `surface_area(``float` `r) ` `{ ` `    ``float` `s_area = 2 * pi * ``pow``(r, 2); ` `    ``cout << ``"Surface Area = "` `<< s_area << endl; ` `} ` ` `  `// Driver program ` `int` `main() ` `{ ` `    ``float` `r = 11; ` `    ``volume(r); ` `    ``surface_area(r); ` `    ``return` `0; ` `} `

## Java

 `// Java Program to calulate volume and ` `// and surface area of a Hemisphere. ` `import` `java.util.*; ` `import` `java.lang.*; ` ` `  `public` `class` `GfG{ ` `     `  `    ``// Initializing value of pi ` `    ``private` `static` `final` `float` `pi = (``float``) ``3.141592653589793``; ` ` `  `    ``// Function to calulate volume ` `    ``public` `static` `void` `volume(``float` `r) ` `    ``{ ` `        ``float` `volume = (``float``)(``2` `* pi *(``float``) Math.pow(r, ``3``))  ` `                                                    ``/ (``float``)(``3``); ` `        ``System.out.println(``"Volume = "` `+ volume); ` `    ``} ` `    ``// Function to calulate surface area ` `    ``public` `static` `void` `surface_area(``float` `r) ` `    ``{ ` `        ``float` `s_area = (``float``)``2` `* pi * (``float``)Math.pow(r, ``2``); ` `        ``System.out.println(``"Surface Area = "` `+ s_area); ` `    ``} ` `     `  `    ``// Driver function ` `    ``public` `static` `void` `main(String argc[]){ ` `        ``float` `r = ``11``; ` `        ``volume(r); ` `        ``surface_area(r); ` `    ``} ` `     `  `} ` `/* This code is contributed by Sagar Shukla */`

## Python

 `# Python code Program to calculate volume and ` `# and surface area of a Hemisphere. ` `import` `math ` ` `  `# Function to calculate volume ` `def` `volume(r): ` `    ``volume ``=` `2` `*` `math.pi ``*` `math.``pow``(r, ``3``) ``/` `3` `    ``print``(``"Volume = "``, ``'%.4f'` `%``volume) ` ` `  `# Function to calculate surface area ` `def` `surface_area(r): ` `    ``s_area ``=` `2` `*` `math.pi ``*` `math.``pow``(r, ``2``) ` `    ``print``(``"Surface Area = "``, ``'%.4f'` `%``s_area) ` `     `  `# Driver code ` `r ``=` `11` `volume(r) ` `surface_area(r) `

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## C#

 `// C# Program to calulate volume and ` `// and surface area of a Hemisphere. ` `using` `System; ` ` `  `public` `class` `GfG{ ` `     `  `    ``// Initializing value of pi ` `    ``private` `static` `float` `pi = (``float``) 3.141592653589793; ` ` `  `    ``// Function to calulate volume ` `    ``public` `static` `void` `volume(``float` `r) ` `    ``{ ` `        ``float` `volume = (``float``)(2 * pi *(``float``) Math.Pow(r, 3))  ` `                                                ``/ (``float``)(3); ` `        ``Console.WriteLine(``"Volume = "` `+ volume); ` `    ``} ` `     `  `    ``// Function to calulate surface area ` `    ``public` `static` `void` `surface_area(``float` `r) ` `    ``{ ` `        ``float` `s_area = (``float``)2 * pi * (``float``)Math.Pow(r, 2); ` `        ``Console.WriteLine(``"Surface Area = "` `+ s_area); ` `    ``} ` `     `  `    ``// Driver function ` `    ``public` `static` `void` `Main() ` `    ``{ ` `        ``float` `r = 11; ` `        ``volume(r); ` `        ``surface_area(r); ` `    ``} ` `     `  `} ` ` `  `/* This code is contributed by vt_m */`

## PHP

 ` `

Output :

```Volume = 2787.64
Surface Area = 760.265
```