Answer:
3528 inches
Step-by-step explanation:
If you take the length of the bookcase (84 inches) and divide it by two you get 42 inches. 42 inches is half of 84 inches. To find the area of the section of the wall the bookcase will cover, you have to take 84 and multiply it by 42. If you do this, you get the answer, which is 3528 inches. Apologies if I'm wrong, but I'm sure that I am 99.99% right.