# Nada Basit
# basit@virginia.edu
# Learning Python (Python version: 3)
# Module 2: Imports ACTIVITY
# Extracted from sphere.py


# Create two methods
# One that calculates the area of a sphere given the radius
# Another that calculates the volume of a sphere given the volume

# Sample solution:
pi = 3.14159

def area(radius):
   '''Calculate the area of the sphere given the radius'''
   return 4 * pi * (radius * radius)

def volume(radius):
   '''Calculate the volume of the sphere given the radius'''
   return (4.0/3.0) * pi * (radius * radius * radius)