input: 
  def calculate_area_of_circle() -> None:
      """ Prompts the user to enter the value of the radius and calculates the area of a circle.
      Output should be printed with the calculated area of the circle.
      >>> calculate_area_of_circle()
      Please enter the radius of the circle: 4
      The area of the circle is: 50.24
      """
  
output:     radius = float(input("Please enter the radius of the circle: "))
      area = 3.14159 * radius * radius
      print(f"The area of the circle is: {area:.2f}")