# Percentage increase in the volume of cuboid if length, breadth and height are increased by fixed percentages

• Last Updated : 25 Mar, 2022

Given a cuboid and three integers L, B, and H. If the length of the cuboid is increased by L%, breadth is increased by B% percent, and height is increased by H% percent. The task is to find the percentage increase in the volume of the cuboid.
Examples:

Input: L = 50, B = 20, H = 10
Output: 98%
Input: L = 10, B = 20, H = 30
Output: 71.6%

Approach: Suppose the original length, breadth and height of the cuboid be l, b and h respectively. Now, the increased length will be (l + ((L * l) / 100)) i.e. increasedLength = l * (1 + (L / 100)). Similarly, increased breadth and height will be increasedBreadth = b * (1 + (B / 100)) and increasedHeight = h * (1 + (H / 100))
Now, calculate originalVol = l * b * h and increasedVol = increasedLength * increasedBreadth * increasedHeight
And, the percentage increase can be found as ((increasedVol – originalVol) / originalVol) * 100

(((l * (1 + (L / 100)) * b * (1 + (B / 100)) h * (1 + (H / 100))) – (l * b * h)) / (l * b * h)) * 100
((l * b * h * (((1 + (L / 100)) * (1 + (B / 100)) * (H / 100)) – 1)) / (l * b * h)) * 100
(((1 + (L / 100)) * (1 + (B / 100)) * (1 + (H / 100))) – 1) * 100

Below is the implementation of the above approach:

## C++

 `// C++ implementation of the approach``#include ``using` `namespace` `std;` `// Function to return the percentage increase``// in the volume of the cuboid``double` `increaseInVol(``double` `l, ``double` `b, ``double` `h)``{``    ``double` `percentInc = (1 + (l / 100))``                        ``* (1 + (b / 100))``                        ``* (1 + (h / 100));``    ``percentInc -= 1;``    ``percentInc *= 100;` `    ``return` `percentInc;``}` `// Driver code``int` `main()``{``    ``double` `l = 50, b = 20, h = 10;``    ``cout << increaseInVol(l, b, h) << ``"%"``;` `    ``return` `0;``}`

## Java

 `// Java implementation of the approach``class` `GFG``{``    ` `// Function to return the percentage increase``// in the volume of the cuboid``static` `double` `increaseInVol(``double` `l,  ``                            ``double` `b,``                            ``double` `h)``{``    ``double` `percentInc = (``1` `+ (l / ``100``)) *``                        ``(``1` `+ (b / ``100``)) *``                        ``(``1` `+ (h / ``100``));``    ``percentInc -= ``1``;``    ``percentInc *= ``100``;` `    ``return` `percentInc;``}` `// Driver code``public` `static` `void` `main(String[] args)``{``    ``double` `l = ``50``, b = ``20``, h = ``10``;``    ``System.out.println(increaseInVol(l, b, h) + ``"%"``);``}``}` `// This code is contributed by Code_Mech`

## Python3

 `# Python3 implementation of the approach` `# Function to return the percentage increase``# in the volume of the cuboid``def` `increaseInVol(l, b, h):``    ``percentInc ``=` `((``1` `+` `(l ``/` `100``)) ``*``                  ``(``1` `+` `(b ``/` `100``)) ``*``                  ``(``1` `+` `(h ``/` `100``)))``    ``percentInc ``-``=` `1``    ``percentInc ``*``=` `100` `    ``return` `percentInc` `# Driver code``l ``=` `50``b ``=` `20``h ``=` `10``print``(increaseInVol(l, b, h), ``"%"``)` `# This code is contributed by Mohit Kumar`

## C#

 `// C# implementation of the approach``using` `System;` `class` `GFG``{``    ` `// Function to return the percentage increase``// in the volume of the cuboid``static` `double` `increaseInVol(``double` `l,``                            ``double` `b,``                            ``double` `h)``{``    ``double` `percentInc = (1 + (l / 100)) *``                        ``(1 + (b / 100)) *``                        ``(1 + (h / 100));``    ``percentInc -= 1;``    ``percentInc *= 100;` `    ``return` `percentInc;``}` `// Driver code``public` `static` `void` `Main()``{``    ``double` `l = 50, b = 20, h = 10;``    ``Console.WriteLine(increaseInVol(l, b, h) + ``"%"``);``}``}` `// This code is contributed by Code_Mech`

## Javascript

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Output:

`98%`

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

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