input: Write a function to edit the given code to prompt the user to enter the value of radius to calculate the area of a circle and print the result. The function should return the printed output as a string. 
  
  def calculate_circle_area() -> str:
      Pi = 3.14
      radius = float(input("Please enter the radius of the circle: "))
      area = Pi * radius ** 2
      return f"The area of the circle is: {area}"
  
  assert calculate_circle_area() == "The area of the circle is: 314.0"
output: def calculate_circle_area() -> str:
      Pi = 3.14
      radius = float(input("Please enter the radius of the circle: "))
      area = Pi * radius ** 2
      return f"The area of the circle is: {area}"