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
Getting the absolute index from a matrix
Sum of odd numbers in a matrix
Reverse a matrix
Area of a triangle
Concatenate two strings
Convert a number to its Roman representation
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