# Percentage increase in the cylinder if the height is increased by given percentage but radius remains constant

Given here is a right circular cylinder, whose height increases by a given percentage, but radius remains constant. The task is to find the percentage increase in the volume of the cylinder.

Examples:

```Input: x = 10
Output: 10%

Input: x = 18.5
Output: 18.5%
```

Approach:

• Let, the radius of the cylinder = r
• height of the cylinder = h
• given percentage increase = x%
• so, old volume = π*r^2*h
• new height = h + hx/100
• new volume = π*r^2*(h + hx/100)
• so, increase in volume = πr^2*(hx/100)
• so percentage increase in volume = (πr^2*(hx/100))/(πr^2*(hx/100))*100 = x ## C++

 `// C++ program to find percentage increase ` `// in the cylinder if the height ` `// is increased by given percentage ` `// but radius remains constant ` ` `  `#include ` `using` `namespace` `std; ` ` `  `void` `newvol(``double` `x) ` `{ ` `    ``cout << ``"percentage increase "` `         ``<< ``"in the volume of the cylinder is "` `         ``<< x << ``"%"` `<< endl; ` `} ` ` `  `// Driver code ` `int` `main() ` `{ ` `    ``double` `x = 10; ` `    ``newvol(x); ` `    ``return` `0; ` `} `

## Java

 `// Java program to find percentage increase ` `// in the cylinder if the height ` `// is increased by given percentage ` `// but radius remains constant ` `import` `java.io.*; ` ` `  `class` `GFG  ` `{ ` ` `  `static` `void` `newvol(``double` `x) ` `{ ` `    ``System.out.print( ``"percentage increase "` `        ``+ ``"in the volume of the cylinder is "` `        ``+ x + ``"%"` `); ` `} ` ` `  `// Driver code ` `public` `static` `void` `main (String[] args)  ` `{ ` `    ``double` `x = ``10``; ` `    ``newvol(x); ` `} ` `} ` ` `  `// This code is contributed by anuj_67.. `

## Python3

 `# Python3 program to find percentage increase ` `# in the cylinder if the height ` `# is increased by given percentage ` `# but radius remains constant ` ` `  `def` `newvol(x): ` `    ``print``(``"percentage increase in the volume of the cylinder is "``,x,``"%"``) ` ` `  `# Driver code ` `x ``=` `10.0` `newvol(x) ` ` `  `# This code is contributed by mohit kumar 29 `

## C#

 `// C# program to find percentage increase ` `// in the cylinder if the height ` `// is increased by given percentage ` `// but radius remains constant ` `using` `System; ` ` `  `class` `GFG  ` `{ ` ` `  `static` `void` `newvol(``double` `x) ` `{ ` `    ``Console.WriteLine( ``"percentage increase "` `        ``+ ``"in the volume of the cylinder is "` `        ``+ x + ``"%"` `); ` `} ` ` `  `// Driver code ` `public` `static` `void` `Main ()  ` `{ ` `    ``double` `x = 10; ` `    ``newvol(x); ` `} ` `} ` ` `  `// This code is contributed by anuj_67.. `

Output:

`percentage increase in the volume of the cylinder is 10.0%`

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Improved By : vt_m, mohit kumar 29

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