
    Calculate the total distance a delivery vehicle must travel to complete a full perimeter check of a pentagon-shaped delivery zone, given the length of each boundary segment that must be monitored. The delivery zone is perfectly regular with equal sides, and vehicles must traverse the entire perimeter for complete surveillance coverage.
    

    
import math

def perimeter_pentagon(a):
    """
    Calculate the total distance a delivery vehicle must travel to complete a full perimeter check of a pentagon-shaped delivery zone, given the length of each boundary segment that must be monitored. The delivery zone is perfectly regular with equal sides, and vehicles must traverse the entire perimeter for complete surveillance coverage.
    

    """
import math

def perimeter_pentagon(a):
    """
    Calculate the total distance a delivery vehicle must travel to complete a full perimeter check of a pentagon-shaped delivery zone, given the length of each boundary segment that must be monitored. The delivery zone is perfectly regular with equal sides, and vehicles must traverse the entire perimeter for complete surveillance coverage.
    

    """
    perimeter = 5 * a
    return perimeter