(iv) create a class named \'shape\' with a method to print this is this is shape then create two other classes named \'rectangle\', \'circle\' inheriting the shape class, both having a method to print this is a rectangular shape and this is circular shape respectively create a subclass \'square\' of \'rectangle\' having a method to print square is a rectangle now call the method of \'shape\' and \'rectangle\' class by the object of \'square\' class