task4
import math

radius_from_area = lambda area: math.sqrt(area / math.pi)
circumference_from_area = lambda area: 2 * math.pi * math.sqrt(area / math.pi)

area = 50  # Пример
radius = radius_from_area(area)
circumference = circumference_from_area(area)

print(f"Radius: {radius}, Circumference: {circumference}")
