
    Calculate the total distance that needs to be covered for a complete perimeter check of a pentagon-shaped isolation ward, given the length of each corridor section in meters, to ensure proper patient monitoring and emergency evacuation routes. The ward has equal-length corridors on all sides, and security staff must patrol the entire perimeter during each monitoring round.
    

    
import math

def perimeter_pentagon(a):
    """
    Calculate the total distance that needs to be covered for a complete perimeter check of a pentagon-shaped isolation ward, given the length of each corridor section in meters, to ensure proper patient monitoring and emergency evacuation routes. The ward has equal-length corridors on all sides, and security staff must patrol the entire perimeter during each monitoring round.
    

    """
import math

def perimeter_pentagon(a):
    """
    Calculate the total distance that needs to be covered for a complete perimeter check of a pentagon-shaped isolation ward, given the length of each corridor section in meters, to ensure proper patient monitoring and emergency evacuation routes. The ward has equal-length corridors on all sides, and security staff must patrol the entire perimeter during each monitoring round.
    

    """
    perimeter = 5 * a
    return perimeter