| True area | On the old Mercator map | Distortion vs truth |
|---|
| Slovenia | 20,198 km² | 42,012 km² | 2.1× |
| Greenland | 2,154,754 km² | 25,447,645 km² | 11.8× |
| Africa | 30,370,000 km² | — | 1× |
Old maps drew Slovenia at about 42,012 km² km². The truth is 20,198 km² km² — a difference of 108%% that school atlases carried for centuries.