I live in a town that is experiencing significant growth. The plot of land across the street from me had one house on it, it was torn down and they're building four in its place. My own house sits on two lots, so I have an above average amount of land for this suburban town. My yard, all told, is 8-10 times the size of what is pictured above.
I couldn't grow a year's worth of side dishes for myself on my land, if I knocked down every tree and shrub and replaced them with something productive. I do some backyard gardening, I can a year's worth of jelly (in fact that's a project for this coming week) and I raise a summer's worth of peppers and tomatoes.