
    Calculate the exterior surface area of a cylindrical cargo container (excluding top and bottom faces) to determine the amount of reflective safety material needed for wrapping delivery trucks' containers, where 'r' represents the container's radius constrained by road clearance limits and 'h' represents the container height restricted by bridge clearances.
    

    
def lateralsuface_cylinder(r, h):
    """
    Calculate the exterior surface area of a cylindrical cargo container (excluding top and bottom faces) to determine the amount of reflective safety material needed for wrapping delivery trucks' containers, where 'r' represents the container's radius constrained by road clearance limits and 'h' represents the container height restricted by bridge clearances.
    

    """
def lateralsuface_cylinder(r, h):
    """
    Calculate the exterior surface area of a cylindrical cargo container (excluding top and bottom faces) to determine the amount of reflective safety material needed for wrapping delivery trucks' containers, where 'r' represents the container's radius constrained by road clearance limits and 'h' represents the container height restricted by bridge clearances.
    

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