def circle_length(radius):
    return radius * 2 * 3.15159
def circle_area(radius):
    return radius ** 2 * 3.14159
def main():
    r = float(input("Радиус >>> "))
    print("Длина окружности:", circle_length(r))
    print("Площадь окружности:", circle_area(r))
main()