If length, breadth and height of the walls are given, find the area of the four walls.
In the test cases you wrote "your_fcn_name(x)" and not "your_fcn_name(l,b,h)" ;-)
The Goldbach Conjecture
Back to basics 25 - Valid variable names
sum of first 'n' terms
Find a Pythagorean triple
Solving Quadratic Equations (Version 1)
Concatenate two strings
Convert a number to its Roman representation
Reverse a matrix
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