# tpm.py Computes the cost per square inch of pizza given cost of the pizza,

# and diameter.

from math import *

def main():

cost_per_square_inch(area_of_pizza())

def area_of_pizza():

diameter = input("Enter the diameter of the pizza: ")

radius = 1.0/2.0 * diameter

a = pi * radius * radius

return a

def cost_per_square_inch(area):

cost_of_pizza = input("Enter the cost of the pizza: ")

cost = cost_of_pizza/area

print "The cost per square inch of pizza is $%0.2f"%(cost)

return

main()

:?: :o