Ответ:

import math

def circle_area(radius):

return math.pi * radius ** 2

radius = float(input("Enter the radius of the circle: "))

print("The area of the circle is", circle_area(radius))

import math

radius = float(input("Enter the radius of the circle: "))

area = math.pi * radius ** 2

print("The area of the circle is", area)