
    Calculate the total wall surface area of a transit vehicle's cubic inspection chamber that requires protective coating during maintenance, given the chamber's side length measurement. The inspection chamber has equal length sides and the calculation should exclude the top and bottom surfaces.
    

    
def lateralsurface_cube(l):
    """
    Calculate the total wall surface area of a transit vehicle's cubic inspection chamber that requires protective coating during maintenance, given the chamber's side length measurement. The inspection chamber has equal length sides and the calculation should exclude the top and bottom surfaces.
    

    """
def lateralsurface_cube(l):
    """
    Calculate the total wall surface area of a transit vehicle's cubic inspection chamber that requires protective coating during maintenance, given the chamber's side length measurement. The inspection chamber has equal length sides and the calculation should exclude the top and bottom surfaces.
    

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