| True area | On the old Mercator map | Distortion vs truth |
|---|
| Montserrat | 82 km² | 89 km² | 1.1× |
| Greenland | 2,154,754 km² | 25,447,645 km² | 11.8× |
| Africa | 30,370,000 km² | — | 1× |
Old maps drew Montserrat at about 89 km² km². The truth is 82 km² km² — a difference of 9%% that school atlases carried for centuries.