
    Design a function that calculates the total boundary length of a pentagonal patient monitoring zone, where each side of the zone measures the same length in centimeters, to optimize the placement of vital sign sensors around a hospital bed. The monitoring zone's perimeter must ensure complete coverage for early detection of patient deterioration while maintaining patient accessibility.
    

    
import math

def perimeter_pentagon(a):
    """
    Design a function that calculates the total boundary length of a pentagonal patient monitoring zone, where each side of the zone measures the same length in centimeters, to optimize the placement of vital sign sensors around a hospital bed. The monitoring zone's perimeter must ensure complete coverage for early detection of patient deterioration while maintaining patient accessibility.
    

    """
import math

def perimeter_pentagon(a):
    """
    Design a function that calculates the total boundary length of a pentagonal patient monitoring zone, where each side of the zone measures the same length in centimeters, to optimize the placement of vital sign sensors around a hospital bed. The monitoring zone's perimeter must ensure complete coverage for early detection of patient deterioration while maintaining patient accessibility.
    

    """
    perimeter = 5 * a
    return perimeter