from math import pi     # this statement imports pi (3.1415...) from the math module


def cubeVolume(sideLength):            # this function calculates the volume for a cube
    volumeOfCube = sideLength ** 3     # this is the formula for the volume of a cube
    return volumeOfCube                # returns the calculation from the above statement


def pyramidVolume(baseLength, height):               # this function calculates the volume for a pyramid
    volumeOfPyramid = ((baseLength**2)*height)/3     # this is the formula for the volume of a pyramid
    return volumeOfPyramid                           # returns the calculation from the above statement


def ellipsoidVolume(radius1, radius2, radius3):                  # this function calculates the volume for an ellipsoid
    volumeOfEllipsoid = ((4*pi)*(radius1*radius2*radius3))/3     # this is the formula for the volume of an ellipsoid
    return volumeOfEllipsoid                                     # returns the calculation from the above statement