def circle_area(radius):
return 3.14159 * radius ** 2
def ring_area(outer_radius, inner_radius):
outer_circle_area = circle_area(outer_radius)
inner_circle_area = circle_area(inner_radius)
return outer_circle_area - inner_circle_area
outer_radius = float(input("Введите внешний радиус кольца: "))
inner_radius = float(input("Введите внутренний радиус кольца: "))
ring_area_result = ring_area(outer_radius, inner_radius)
print(f"Площадь кольца равна {ring_area_result}")