# Volume of biggest sphere within a right circular cylinder

Given a right circular cylinder of radius and height . The task is to find the radius of the biggest sphere that can be inscribed within it.
Examples

```Input : r = 4, h = 8
Output : 4

Input : r = 5, h= 10
Output :5``` Approach: From the diagram, it is clear that the radius of the sphere will be clearly equal to the base radius of cylinder.
So, R = r
Below is the implementation of the above approach:

## C++

 `// C++ Program to find the biggest sphere` `// that can be fit within a right circular cylinder` `#include ` `using` `namespace` `std;`   `// Function to find the biggest sphere` `float` `sph(``float` `r, ``float` `h)` `{`   `    ``// radius and height cannot be negative` `    ``if` `(r < 0 && h < 0)` `        ``return` `-1;`   `    ``// radius of sphere` `    ``float` `R = r;` `    ``return` `R;` `}`   `// Driver code` `int` `main()` `{` `    ``float` `r = 4, h = 8;` `    ``cout << sph(r, h) << endl;` `    ``return` `0;` `}`

## Java

 `// Java Program to find the biggest` `// sphere that can be fit within a ` `// right circular cylinder` `import` `java.io.*;`   `class` `GFG ` `{`   `// Function to find the biggest sphere` `static` `float` `sph(``float` `r, ``float` `h)` `{`   `    ``// radius and height cannot ` `    ``// be negative` `    ``if` `(r < ``0` `&& h < ``0``)` `        ``return` `-``1``;`   `    ``// radius of sphere` `    ``float` `R = r;` `    ``return` `R;` `}`   `// Driver code` `public` `static` `void` `main (String[] args) ` `{` `    ``float` `r = ``4``, h = ``8``;` `    ``System.out.println(sph(r, h));` `}` `}`   `// This code is contributed ` `// by inder_verma`

## Python3

 `# Python 3 Program to find the biggest ` `# sphere that can be fit within a right` `# circular cylinder`   `# Function to find the biggest sphere` `def` `sph(r, h):` `    `  `    ``# radius and height cannot ` `    ``# be negative` `    ``if` `(r < ``0` `and` `h < ``0``):` `        ``return` `-``1`   `    ``# radius of sphere` `    ``R ``=` `r` `    ``return` `float``(R)`   `# Driver code` `r, h ``=` `4``, ``8` `print``(sph(r, h))`   `# This code is contributed ` `# by PrinciRaj1992`

## C#

 `// C# Program to find the biggest` `// sphere that can be fit within a ` `// right circular cylinder` `using` `System;`   `class` `GFG ` `{`   `// Function to find the biggest sphere` `static` `float` `sph(``float` `r, ``float` `h)` `{`   `    ``// radius and height cannot ` `    ``// be negative` `    ``if` `(r < 0 && h < 0)` `        ``return` `-1;`   `    ``// radius of sphere` `    ``float` `R = r;` `    ``return` `R;` `}`   `// Driver code` `public` `static` `void` `Main () ` `{` `    ``float` `r = 4, h = 8;` `    ``Console.WriteLine(sph(r, h));` `}` `}`   `// This code is contributed ` `// by shs..`

## PHP

 ``

## Javascript

 ``

Output:

`4`

Time Complexity: O(1)

Auxiliary Space: O(1)

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