Difference (from prior author revision)
(no other diffs)
Added: 3a4,8
**1 km2 = 106 m2 = 0.39 square miles. **A square of this area has a size of 1 km. **A cube of this area has a size of 408 m. **A circle of this area has a radius of 564 m. **A sphere of this area has a radius of 282 m.
Added: 4a10
To help compare sizes of different geographic regions, we list here areas between 1 km2 and 10 km2.