
    Write a function that calculates the total external surface area of a standard cargo container given its edge length in meters, which is essential for determining heat exposure during transport and applying protective coatings during maintenance. The cargo container is perfectly cubic in shape, and the surface area calculation will be used in the fleet management system's maintenance scheduling module.
    

    
def surfacearea_cube(l):
    """
    Write a function that calculates the total external surface area of a standard cargo container given its edge length in meters, which is essential for determining heat exposure during transport and applying protective coatings during maintenance. The cargo container is perfectly cubic in shape, and the surface area calculation will be used in the fleet management system's maintenance scheduling module.
    

    """
def surfacearea_cube(l):
    """
    Write a function that calculates the total external surface area of a standard cargo container given its edge length in meters, which is essential for determining heat exposure during transport and applying protective coatings during maintenance. The cargo container is perfectly cubic in shape, and the surface area calculation will be used in the fleet management system's maintenance scheduling module.
    

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