Sierra Leone is about 7 times smaller than Cameroon.

Cameroon is approximately 475,440 sq km, while Sierra Leone is approximately 71,740 sq km, making Sierra Leone 15.09% the size of Cameroon. Meanwhile, the population of Cameroon is ~29.9 million people (21.1 million fewer people live in Sierra Leone).
Tip: This to-scale comparison of Cameroon vs. Sierra Leone uses the Mercator projection, which distorts the size of regions near the poles.
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