Answer:
pi = 3.14
r = float(input("Enter radius: "))
circumference = 2 * pi * r
print("A circle with Radius of {} has a Circumference of {:.1f}".format(r, circumference))
Step-by-step explanation:
Initialize the pi as 3.14
Ask the user to enter the r
Calculate the circumference using the given formula
Print the result as requested format
(Note that I used .format() to format the output. The values in the {}'s will be the ones in the format() method, r and circumference respectively)