When all of Wikipedia's "featured articles" are printed out, it looks like this:
That, I repeat, is only the featured articles — the articles that the editors consider to be the best articles in terms of style, completeness, etc.
There are 2,545 featured articles on Wikipedia, out of a total of 2,916,034 articles in all.
Therefore, if you printed all the Wikipedia information into paper form, it would come out to about 1,150 of these monstrosities.
Take that, Enclyclopedia Brittanica.