
    Calculate the total distance delivery trucks must travel when forced to reroute along the edges of a pentagon-shaped delivery zone boundary during adverse weather conditions, given the length of each boundary segment in kilometers. The delivery zone is perfectly regular with equal sides, and trucks must traverse the entire perimeter to maintain service coverage.
    

    
import math

def perimeter_pentagon(a):
    """
    Calculate the total distance delivery trucks must travel when forced to reroute along the edges of a pentagon-shaped delivery zone boundary during adverse weather conditions, given the length of each boundary segment in kilometers. The delivery zone is perfectly regular with equal sides, and trucks must traverse the entire perimeter to maintain service coverage.
    

    """
import math

def perimeter_pentagon(a):
    """
    Calculate the total distance delivery trucks must travel when forced to reroute along the edges of a pentagon-shaped delivery zone boundary during adverse weather conditions, given the length of each boundary segment in kilometers. The delivery zone is perfectly regular with equal sides, and trucks must traverse the entire perimeter to maintain service coverage.
    

    """
    perimeter = 5 * a
    return perimeter