
    Design a function that calculates the external monitoring surface area of a medical oxygen cylinder in the ICU, excluding the top and bottom faces, to determine proper sensor placement for continuous temperature monitoring. The monitoring system requires the radius and height of the oxygen cylinder to ensure complete coverage of the lateral surface for safety compliance.
    

    
def lateralsuface_cylinder(r, h):
    """
    Design a function that calculates the external monitoring surface area of a medical oxygen cylinder in the ICU, excluding the top and bottom faces, to determine proper sensor placement for continuous temperature monitoring. The monitoring system requires the radius and height of the oxygen cylinder to ensure complete coverage of the lateral surface for safety compliance.
    

    """
def lateralsuface_cylinder(r, h):
    """
    Design a function that calculates the external monitoring surface area of a medical oxygen cylinder in the ICU, excluding the top and bottom faces, to determine proper sensor placement for continuous temperature monitoring. The monitoring system requires the radius and height of the oxygen cylinder to ensure complete coverage of the lateral surface for safety compliance.
    

    """
    lateralsurface = 2 * 3.1415 * r * h
    return lateralsurface