Look at the generic rectangle below.
What two numbers are being multiplied using this rectangle? How can you tell?
Write the product as a sum of the areas and find the answer.
Look back at problem 3-63 if you are not sure about using generic rectangles.
We can see that
is a factor of both and , so we can put it on the diagram as shown.
Then we can see that
belongs at the top.
Again, reference problem 3-63 as a guide for this problem. Remember that you are adding the smaller areas to find the total area.