
    Calculate the total wall surface area of a bank vault (excluding top and bottom faces) to determine the required security panel coverage, given the vault's cubic dimension in meters. The vault's dimensions are equal on all sides, and the security panels must cover all four vertical walls completely.
    

    
def lateralsurface_cube(l):
    """
    Calculate the total wall surface area of a bank vault (excluding top and bottom faces) to determine the required security panel coverage, given the vault's cubic dimension in meters. The vault's dimensions are equal on all sides, and the security panels must cover all four vertical walls completely.
    

    """
def lateralsurface_cube(l):
    """
    Calculate the total wall surface area of a bank vault (excluding top and bottom faces) to determine the required security panel coverage, given the vault's cubic dimension in meters. The vault's dimensions are equal on all sides, and the security panels must cover all four vertical walls completely.
    

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