#------------------------------------------------------------------------------
#  Circle2.py
#  Uses functions
#------------------------------------------------------------------------------

import math

# circle_area()
# computes the area of a circle
def circle_area(r):
   a = math.pi*(r**2)
   return a
# end circle_area()

# circle_circumference()
# computes the circumference of a circle
def circle_circumference(r):
   c = 2*math.pi*r
   return c
# end circle_circumference()


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

print() # blank line

# get the radius of a circle
radius_string = input("Enter the radius of a circle: ")
r = float(radius_string)

# print the circumference and area of the circle
print("The area of the circle is:", circle_area(r))
print("The circumference of the circle is:", circle_circumference(r))

print() # blank line

# get the radius of another circle
radius_string = input("Enter the radius of another circle: ")
r = float(radius_string)

# print the circumference and area of the circle
print("The area of the circle is:", circle_area(r))
print("The circumference of the circle is:", circle_circumference(r))

print() # blank line

# end program -----------------------------------------------------------------