input: Write a function that prompts the user to enter the radius of a circle and then calculates and prints the area of the circle. The function should use the value of Pi as 3.14.
  assert calculate_circle_area()==("Please enter the radius of the circle: ", 78.5)
  assert calculate_circle_area()==("Please enter the radius of the circle: ", 153.86)
  assert calculate_circle_area()==("Please enter the radius of the circle: ", 3.14)
output: def calculate_circle_area():
      radius = float(input("Please enter the radius of the circle: "))
      area = 3.14 * radius * radius
      return "Please enter the radius of the circle: ", area