| Area in square kilometres | Answer | % Correct |
|---|---|---|
| 227974.55 | Honshu | 98%
|
| 77984.39 | Hokkaido | 97%
|
| 36751.67 | Kyushu | 92%
|
| 18300.95 | Shikoku | 87%
|
| 1208.19 | Okinawa | 84%
|
| 854.52 | Sado | 35%
|
| 696.52 | Tsushima | 32%
|
| 592.30 | Awaji | 28%
|
| 504.89 | Yakushima | 22%
|
| 3182.65 | Etorofu | 21%
|
| 1498.56 | Kunashiri | 20%
|
| 445.05 | Tanegashima | 20%
|
| 712.48 | Amami Oshima | 17%
|
| 250.16 | Shikotan | 15%
|
| 326.45 | Fukue | 12%
|
| 289.28 | Iriomote | 12%
|
| 574.22 | Amagusa Shimoshima | 9%
|
| 241.64 | Dougo | 8%
|
| 247.77 | Tokunoshima | 8%
|
| 225.37 | Amagusa Kamijima | 6%
|