
    Design a function for a personalized geometry learning module that calculates the total distance around a regular pentagon-shaped study table when given the length of one side, helping students master perimeter calculations through practical classroom examples. The function should work with any positive length measurement provided by the student during their interactive learning session.
    

    
import math

def perimeter_pentagon(a):
    """
    Design a function for a personalized geometry learning module that calculates the total distance around a regular pentagon-shaped study table when given the length of one side, helping students master perimeter calculations through practical classroom examples. The function should work with any positive length measurement provided by the student during their interactive learning session.
    

    """
import math

def perimeter_pentagon(a):
    """
    Design a function for a personalized geometry learning module that calculates the total distance around a regular pentagon-shaped study table when given the length of one side, helping students master perimeter calculations through practical classroom examples. The function should work with any positive length measurement provided by the student during their interactive learning session.
    

    """
    perimeter = 5 * a
    return perimeter