
    Calculate the total surface area of a bank's security deposit box to determine the amount of protective coating needed for safeguarding valuable client assets, given the length of one edge of the cubic vault. The protective coating must cover all six faces of the cubic vault completely and uniformly to maintain security standards.
    

    
def surfacearea_cube(l):
    """
    Calculate the total surface area of a bank's security deposit box to determine the amount of protective coating needed for safeguarding valuable client assets, given the length of one edge of the cubic vault. The protective coating must cover all six faces of the cubic vault completely and uniformly to maintain security standards.
    

    """
def surfacearea_cube(l):
    """
    Calculate the total surface area of a bank's security deposit box to determine the amount of protective coating needed for safeguarding valuable client assets, given the length of one edge of the cubic vault. The protective coating must cover all six faces of the cubic vault completely and uniformly to maintain security standards.
    

    """
    surfacearea = 6 * l * l
    return surfacearea