# Calculate volume and surface area of Torus

This article is about the surface and mathematical concept of a torus.

A 3D shape made by revolving a small circle (radius r) along a line made by a bigger circle (radius R).

**Property:**

- It can be made by revolving a small circle (radius r) along a line made by a bigger circle (radius R).
- It is not a polyhedron
- It has no vertices or edges

**Surface Area**

The surface area of a Torus is given by the formula –Surface Area = 4 × Pi^2 × R × r

Where r is the radius of the small circle and R is the radius of bigger circle and Pi is constant Pi=3.14159.

**Volume**

The volume of a cone is given by the formula –Volume = 2 × Pi^2 × R × r^2

Where r is the radius of the small circle and R is the radius of bigger circle and Pi is constant Pi=3.14159.

**Examples:**

Input : r=3, R=7 Output : Volume: 1243.568195 Surface: 829.045464

## C++

`// C++ program to calculate volume ` `// and surface area of Torus ` `#include<bits/stdc++.h> ` `using` `namespace` `std; ` ` ` `int` `main() ` `{ ` ` ` `// radus of inner circle ` ` ` `double` `r = 3; ` ` ` ` ` `// distance from origin to center of inner circle ` ` ` `// radius of black circle in figure ` ` ` `double` `R = 7; ` ` ` ` ` `// Value of Pi ` ` ` `float` `pi = (` `float` `)3.14159; ` ` ` `double` `Volume = 0; ` ` ` `Volume = 2 * pi * pi * R * r * r; ` ` ` `cout<<` `"Volume: "` `<<Volume<<endl; ` ` ` ` ` `double` `Surface = 4 * pi * pi * R * r; ` ` ` `cout<<` `"Surface: "` `<<Surface<<endl; ` `} ` |

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## C

`// C program to calculate volume ` `// and surface area of Torus ` `#include <stdio.h> ` `int` `main() ` `{ ` ` ` `// radus of inner circle ` ` ` `double` `r = 3; ` ` ` ` ` `// distance from origin to center of inner circle ` ` ` `// radius of black circle in figure ` ` ` `double` `R = 7; ` ` ` ` ` `// Value of Pi ` ` ` `float` `pi = (` `float` `)3.14159; ` ` ` `double` `Volume = 0; ` ` ` `Volume = 2 * pi * pi * R * r * r; ` ` ` `printf` `(` `"Volume: %f"` `, Volume); ` ` ` ` ` `double` `Surface = 4 * pi * pi * R * r; ` ` ` `printf` `(` `"\nSurface: %f"` `, Surface); ` `} ` |

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## Java

`// Java program to calculate volume ` `// and surface area of Torus ` `class` `Test { ` ` ` ` ` `public` `static` `void` `main(String args[]) ` ` ` `{ ` ` ` ` ` `// radius of inner circle ` ` ` `double` `r = ` `3` `; ` ` ` ` ` `// distance from origin to center of inner circle ` ` ` `// radius of black circle in figure ` ` ` `double` `R = ` `7` `; ` ` ` ` ` `// Value of Pi ` ` ` `float` `pi = (` `float` `)` `3.14159` `; ` ` ` `double` `Volume = ` `0` `; ` ` ` `Volume = ` `2` `* pi * pi * R * r * r; ` ` ` `System.out.printf(` `"Volume: %f"` `, Volume); ` ` ` ` ` `double` `Surface = ` `4` `* pi * pi * R * r; ` ` ` `System.out.printf(` `"\nSurface: %f"` `, Surface); ` ` ` `} ` `} ` |

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## Python3

`# Python3 program to calculate volume ` `# and surface area of Torus ` `# radus of inner circle ` `r ` `=` `3` ` ` `# distance from origin to center of inner circle ` `# radius of black circle in figure ` `R ` `=` `7` ` ` `# Value of Pi ` `pi ` `=` `3.14159` `Volume ` `=` `(` `float` `)(` `2` `*` `pi ` `*` `pi ` `*` `R ` `*` `r ` `*` `r); ` `print` `(` `"Volume: "` `, Volume); ` `Surface ` `=` `(` `float` `)(` `4` `*` `pi ` `*` `pi ` `*` `R ` `*` `r); ` `print` `(` `"Surface: "` `, Surface); ` |

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## C#

`// C# program to calculate volume ` `// and surface area of Torus ` `using` `System; ` ` ` `class` `GFG ` `{ ` ` ` `// Driver Code ` `public` `static` `void` `Main() ` `{ ` ` ` ` ` `// radius of inner circle ` ` ` `double` `r = 3; ` ` ` ` ` `// distance from origin to center ` ` ` `// of inner circle radius of black ` ` ` `// circle in figure ` ` ` `double` `R = 7; ` ` ` ` ` `// Value of Pi ` ` ` `float` `pi = (` `float` `)3.14159; ` ` ` `double` `Volume = 0; ` ` ` `Volume = 2 * pi * pi * R * r * r; ` ` ` `Console.WriteLine(` `"Volume: {0}"` `, Volume); ` ` ` ` ` `double` `Surface = 4 * pi * pi * R * r; ` ` ` `Console.WriteLine(` `"Surface: {0}"` `, Surface); ` `} ` `} ` ` ` `// This code is contributed by Soumik ` |

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## PHP

`<?php ` `// PHP program to calculate volume ` `// and surface area of Torus ` ` ` `// radus of inner circle ` `$r` `= 3; ` ` ` `// distance from origin to center ` `// of inner circle radius of black ` `// circle in figure ` `$R` `= 7; ` ` ` `// Value of Pi ` `$pi` `= (float)3.14159; ` `$Volume` `= 0; ` `$Volume` `= 2 * ` `$pi` `* ` `$pi` `* ` `$R` `* ` `$r` `* ` `$r` `; ` ` ` `echo` `"Volume: "` `, ` `$Volume` `, ` `"\n"` `; ` ` ` `$Surface` `= 4 * ` `$pi` `* ` `$pi` `* ` `$R` `* ` `$r` `; ` ` ` `echo` `"Surface: "` `, ` `$Surface` `, ` `"\n"` `; ` ` ` `// This code is contributed by ajit ` `?> ` |

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**Output:**

Volume: 1243.568195 Surface: 829.045464

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