
    Calculate the total border distance that delivery vehicles must cover when serving customers along a pentagonal delivery zone's perimeter, given that each boundary segment is equal in length and measured in kilometers. This calculation is essential for optimizing delivery routes and resource allocation for customers located near the zone's edges.
    

    
import math

def perimeter_pentagon(a):
    """
    Calculate the total border distance that delivery vehicles must cover when serving customers along a pentagonal delivery zone's perimeter, given that each boundary segment is equal in length and measured in kilometers. This calculation is essential for optimizing delivery routes and resource allocation for customers located near the zone's edges.
    

    """
import math

def perimeter_pentagon(a):
    """
    Calculate the total border distance that delivery vehicles must cover when serving customers along a pentagonal delivery zone's perimeter, given that each boundary segment is equal in length and measured in kilometers. This calculation is essential for optimizing delivery routes and resource allocation for customers located near the zone's edges.
    

    """
    perimeter = 5 * a
    return perimeter