
    Calculate the total distance a delivery vehicle must travel to completely circumnavigate a square city block, given the block's side length in meters, to optimize route planning and fuel consumption estimates for the fleet management system.
    

    
def square_perimeter(a):
    """
    Calculate the total distance a delivery vehicle must travel to completely circumnavigate a square city block, given the block's side length in meters, to optimize route planning and fuel consumption estimates for the fleet management system.
    

    """
def square_perimeter(a):
    """
    Calculate the total distance a delivery vehicle must travel to completely circumnavigate a square city block, given the block's side length in meters, to optimize route planning and fuel consumption estimates for the fleet management system.
    

    """
    perimeter = 4 * a
    return perimeter