
    Calculate the total length of medical-grade isolation barrier tape needed to properly mark the boundaries of a square isolation room in the emergency department, given the room's side length in feet. This calculation is essential for maintaining proper infection control protocols in emergency triage situations.
    

    
def square_perimeter(a):
    """
    Calculate the total length of medical-grade isolation barrier tape needed to properly mark the boundaries of a square isolation room in the emergency department, given the room's side length in feet. This calculation is essential for maintaining proper infection control protocols in emergency triage situations.
    

    """
def square_perimeter(a):
    """
    Calculate the total length of medical-grade isolation barrier tape needed to properly mark the boundaries of a square isolation room in the emergency department, given the room's side length in feet. This calculation is essential for maintaining proper infection control protocols in emergency triage situations.
    

    """
    perimeter = 4 * a
    return perimeter