I calculated the average of the amount of pages in a book. I got five books and found the amount of pages in all of them. In book 1, I got 208 pages, in book 2, I got 162 pages, in book 3, I got 226 pages, in book 4, I got 194 pages, same with book 5, so I added them all together giving me 984. Then I divided it by 5 giving me the answer of 196.8 pages on average. Book one is 20.1 cm long, book two is 20.3 cm long, book three is 31.7 cm long, book four is 33.2 cm long and book five is 34.5 cm long.
