#------------------------------------------------------------------------------
#  Circle4.py
#------------------------------------------------------------------------------

import math

def f(r):
   """ Return (circumference, area) of a circle of radius r """
   c = 2 * math.pi * r
   a = math.pi * r * r
   return (c, a)
# end f()


#-- main program --------------------------------------------------------------

r = float(input("Enter the radius: "))
T = f(r)

print("The area is: "+str(T[1]))
print("The circumference is: "+str(T[0]))