how much MB of content needed to be approved by Google Adsense?

You can say that's an odd question but I wonder how much data needed (or how many posts/pages) to be approved by Google Adsense.
Recently, website of my own company (which is a wood trading company) is rejected due to Google ad policy. I suspect it's because of insufficient content. (might be something else, as well)
It has 36 pages (containing informative articles) and 2 posts.:O
I'm not posting the URL here, just because I don't want to make a spam or an advertisement.
But I can send you the URL via private message if you would like to inspect and make some suggestions.