| True area | On the old Mercator map | Distortion vs truth |
|---|
| South Korea | 97,165 km² | 149,634 km² | 1.5× |
| Greenland | 2,154,754 km² | 25,447,645 km² | 11.8× |
| Africa | 30,370,000 km² | — | 1× |
Old maps drew South Korea at about 149,634 km² km². The truth is 97,165 km² km² — a difference of 54%% that school atlases carried for centuries.