in the Mercator projection (below), North America looks at least as big, if not slightly larger, than Africa. And Greenland also looks of comparable size.

But in reality, Africa eclipses both. As is apparent in the Gall-Peters equal projection map (below), you can fit North America into Africa and still have space for India, Argentina, Tunisia and some left over. Greenland meanwhile is one-fourteenth the size of the continent.