
    Design a function that calculates the total monitoring boundary length for a bank's fraud detection system, where the boundary forms a square perimeter defined by a transaction amount threshold. The function should accept a standardized transaction threshold value and return the total length of the monitoring perimeter that, when exceeded in any direction on the transaction pattern graph, triggers enhanced security protocols.
    

    
def square_perimeter(a):
    """
    Design a function that calculates the total monitoring boundary length for a bank's fraud detection system, where the boundary forms a square perimeter defined by a transaction amount threshold. The function should accept a standardized transaction threshold value and return the total length of the monitoring perimeter that, when exceeded in any direction on the transaction pattern graph, triggers enhanced security protocols.
    

    """
def square_perimeter(a):
    """
    Design a function that calculates the total monitoring boundary length for a bank's fraud detection system, where the boundary forms a square perimeter defined by a transaction amount threshold. The function should accept a standardized transaction threshold value and return the total length of the monitoring perimeter that, when exceeded in any direction on the transaction pattern graph, triggers enhanced security protocols.
    

    """
    perimeter = 4 * a
    return perimeter