#!/usr/bin/python

# P2PU - Python - Chapter 4 - Operators
# Calculate surface area and volume of a sphere based on a given radius

import math

try:
        radius = raw_input('Radius: ')
        radius = float(radius)
except:
        print 'You must enter a number!'
        exit()

area = 4 * math.pi * math.pow(radius, 2)
vol  = 4.0 / 3 * math.pi * math.pow(radius, 3)

print 'Area:', area
print 'Volume:', vol