Dominican Republic is about 5 times smaller than Guinea.

Guinea is approximately 245,857 sq km, while Dominican Republic is approximately 48,670 sq km, making Dominican Republic 19.8% the size of Guinea. Meanwhile, the population of Guinea is ~15.1 million people (3.6 million fewer people live in Dominican Republic).
Tip: This to-scale comparison of Guinea vs. Dominican Republic uses the Mercator projection, which distorts the size of regions near the poles.
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