| Rank | Area (km²) | Countries | % Correct |
|---|---|---|---|
| 1 | 2,381,74 | Algeria | 100%
|
| 2 | 2,344,858 | Democratic Republic of the Congo | 99%
|
| 3 | 1,861,484 | Sudan | 93%
|
| 4 | 1,759,540 | Libya | 82%
|
| 6 | 1,267,000 | Niger | 82%
|
| 7 | 1,246,700 | Angola | 79%
|
| 5 | 1,284,000 | Chad | 79%
|
| 12 | 1,001,449 | Egypt | 76%
|
| 10 | 1,104,300 | Ethiopia | 76%
|
| 8 | 1,240,192 | Mali | 76%
|
| 14 | 923,768 | Nigeria | 75%
|
| 9 | 1,221,037 | South Africa | 75%
|
| 13 | 945,203 | Tanzania | 72%
|
| 11 | 1,030,700 | Mauritania | 68%
|
| 15 | 825,418 | Namibia | 66%
|