You need to build a wall to enclose a certain area. Calculate the available area after you build the wall.
Area of dimensions x=5m,y=5m and wall of 3 materials with thicknesses: 0.2m,0.1m,1m . Avalaible area after the wall is build : 5.76m^2
>> AvailableArea(5,5,0.2,0.1,1) >> ans=5.76