
    Given the distance between adjacent connected professionals in a pentagon-shaped networking zone, calculate the total geographical boundary length that encompasses the local professional networking area. Each professional is positioned at a vertex of the pentagon, with the distance between adjacent professionals being equal, forming a regular pentagon that defines the networking zone's perimeter.
    

    
import math

def perimeter_pentagon(a):
    """
    Given the distance between adjacent connected professionals in a pentagon-shaped networking zone, calculate the total geographical boundary length that encompasses the local professional networking area. Each professional is positioned at a vertex of the pentagon, with the distance between adjacent professionals being equal, forming a regular pentagon that defines the networking zone's perimeter.
    

    """
import math

def perimeter_pentagon(a):
    """
    Given the distance between adjacent connected professionals in a pentagon-shaped networking zone, calculate the total geographical boundary length that encompasses the local professional networking area. Each professional is positioned at a vertex of the pentagon, with the distance between adjacent professionals being equal, forming a regular pentagon that defines the networking zone's perimeter.
    

    """
    perimeter = 5 * a
    return perimeter