chotu

class ball:
  def __init__(self, radius):
    self.radius = radius

  def show(self):
    print(f"radius of the ball is {self.radius}")
    pass

  pass

class football(ball):

  pass


class rectangle(ball):

  def show(self):
    print(f"The area of the rectangle is: {self.radius*self.radius}")
  pass
print("1. ball\n2. rectangle")
choice = int(input())
if choice == 1:
    a = ball(int(input()))
    a.show()

elif choice == 2:

    b = rectangle(int(input()))
    b.show()
else:
    print("You Entered Error")