Calculate Area and Circumference of Circle in Python

Enter radius: 3
Area: 28.274333882308138
Cicumference: 18.84955592153876

import math


def main():
	radius = float(input("Enter radius: "))

	area = math.pi * radius * radius
	circumference = 2 * math.pi * radius

	print("Area:", area)
	print("Circumference:", circumference)


if __name__ == "__main__":
	main()