
    Design a function that calculates the total wall surface area required for installing digital information displays and weather protection panels on a cubic bus terminal waiting area, given the length of one side of the structure. The wall surface area calculation should exclude the floor and ceiling to ensure accurate material planning for only the four vertical sides of the terminal.
    

    
def lateralsurface_cube(l):
    """
    Design a function that calculates the total wall surface area required for installing digital information displays and weather protection panels on a cubic bus terminal waiting area, given the length of one side of the structure. The wall surface area calculation should exclude the floor and ceiling to ensure accurate material planning for only the four vertical sides of the terminal.
    

    """
def lateralsurface_cube(l):
    """
    Design a function that calculates the total wall surface area required for installing digital information displays and weather protection panels on a cubic bus terminal waiting area, given the length of one side of the structure. The wall surface area calculation should exclude the floor and ceiling to ensure accurate material planning for only the four vertical sides of the terminal.
    

    """
    LSA = 4 * (l * l)
    return LSA