input: def calculate_circle_area(radius: float) -> float:
      """ Calculate the area of a circle based on the given radius.
      >>> calculate_circle_area(5.0)
      78.5
      >>> calculate_circle_area(3.5)
      38.465
      """
      Pi = 3.14
      area = Pi * (radius ** 2)
      return area
output:     Pi = 3.14
      area = Pi * (radius ** 2)
      return area