Exercise 1.9 A framing shop uses a square piece of matt cardboard to create a set of square frames, one cut out from the other, with as little wasted as possible. The original piece of cardboard is 50 cm by 50 cm. Each of the "nested" square frames (see Problem 1.8 for the definition of nested) has a border 2 cm thick. How many frames in all can be made from this original piece of cardboard? What is the total area that can be enclosed by all these frames together? . . . . O 2 cm 50 cm Figure 1.8. For problem 1.9