
    Calculate the total length of protective barrier tape needed to establish a complete safety perimeter around a square isolation room, given the room's side length in meters, to maintain proper infection control protocols in a hospital setting.
    

    
def square_perimeter(a):
    """
    Calculate the total length of protective barrier tape needed to establish a complete safety perimeter around a square isolation room, given the room's side length in meters, to maintain proper infection control protocols in a hospital setting.
    

    """
def square_perimeter(a):
    """
    Calculate the total length of protective barrier tape needed to establish a complete safety perimeter around a square isolation room, given the room's side length in meters, to maintain proper infection control protocols in a hospital setting.
    

    """
    perimeter = 4 * a
    return perimeter