EXTEND: Now try customizing your program! Be sure to meet these minimum technical requirements:

1. Try changing the values of the rectangle width and height variables.
2. Calculate perimeter for your rectangle and name it rectangle_perim. Remember, perimeter is 2 times the height + 2 times the width. Use the rectangle's .say() to say the perimeter instead of area!
3. Add a square to your program and name it my_square. Have it say its area.