
    Calculate the total length of antimicrobial copper strips needed for installation along the walls of a square isolation room in the hospital ward, given the room's side length in meters, to create a complete protective barrier against infection transmission. The copper strips must be installed continuously along all walls without gaps, and the total length must account for the entire room perimeter.
    

    
def square_perimeter(a):
    """
    Calculate the total length of antimicrobial copper strips needed for installation along the walls of a square isolation room in the hospital ward, given the room's side length in meters, to create a complete protective barrier against infection transmission. The copper strips must be installed continuously along all walls without gaps, and the total length must account for the entire room perimeter.
    

    """
def square_perimeter(a):
    """
    Calculate the total length of antimicrobial copper strips needed for installation along the walls of a square isolation room in the hospital ward, given the room's side length in meters, to create a complete protective barrier against infection transmission. The copper strips must be installed continuously along all walls without gaps, and the total length must account for the entire room perimeter.
    

    """
    perimeter = 4 * a
    return perimeter