| True area | On the old Mercator map | Distortion vs truth |
|---|
| Denmark | 42,411 km² | 135,291 km² | 3.2× |
| Greenland | 2,154,754 km² | 25,447,645 km² | 11.8× |
| Africa | 30,370,000 km² | — | 1× |
Old maps drew Denmark at about 135,291 km² km². The truth is 42,411 km² km² — a difference of 219%% that school atlases carried for centuries.