
    Calculate the total length of decorative barriers needed to enclose a pentagon-shaped networking area at a social event, where each side of the area has equal length 'a' to ensure optimal crowd flow and interaction space. The resulting perimeter measurement will be used to order the correct amount of modular barrier sections for the event setup.
    

    
import math

def perimeter_pentagon(a):
    """
    Calculate the total length of decorative barriers needed to enclose a pentagon-shaped networking area at a social event, where each side of the area has equal length 'a' to ensure optimal crowd flow and interaction space. The resulting perimeter measurement will be used to order the correct amount of modular barrier sections for the event setup.
    

    """
import math

def perimeter_pentagon(a):
    """
    Calculate the total length of decorative barriers needed to enclose a pentagon-shaped networking area at a social event, where each side of the area has equal length 'a' to ensure optimal crowd flow and interaction space. The resulting perimeter measurement will be used to order the correct amount of modular barrier sections for the event setup.
    

    """
    perimeter = 5 * a
    return perimeter