3.py

# Create a class that represents a cuboid:
# It should take its three sizes as constructor parameters (numbers)
# It should have a method called `getSurface` that returns the cuboid's surface
# It should have a method called `getVolume` that returns the cuboid's volume

class Cuboid():

    def __init__(self, x, y, z):
        self.x = x
        self.y = y
        self.z = z

    def getSurface(self):
        return 2 * (self.x * self.y + self.y * self.z + self.x * self.z)

    def getVolume(self):
        return self.x * self.y * self.z

cube = Cuboid(2, 3, 4)
print(cube.getSurface())
print(cube.getVolume())