
    Calculate the total boundary distance of a delivery zone shaped as a regular pentagon, where each border segment is of equal length in kilometers, to determine the complete perimeter that delivery vehicles must cover for zone coverage. This boundary information is crucial for optimizing delivery routes and ensuring comprehensive coverage of the designated service area.
    

    
import math

def perimeter_pentagon(a):
    """
    Calculate the total boundary distance of a delivery zone shaped as a regular pentagon, where each border segment is of equal length in kilometers, to determine the complete perimeter that delivery vehicles must cover for zone coverage. This boundary information is crucial for optimizing delivery routes and ensuring comprehensive coverage of the designated service area.
    

    """
import math

def perimeter_pentagon(a):
    """
    Calculate the total boundary distance of a delivery zone shaped as a regular pentagon, where each border segment is of equal length in kilometers, to determine the complete perimeter that delivery vehicles must cover for zone coverage. This boundary information is crucial for optimizing delivery routes and ensuring comprehensive coverage of the designated service area.
    

    """
    perimeter = 5 * a
    return perimeter