Rhode Island is about 29 times smaller than Serbia.

Serbia is approximately 77,474 sq km, while Rhode Island is approximately 2,706 sq km, making Rhode Island 3.49% the size of Serbia. Meanwhile, the population of Serbia is ~6.7 million people (5.7 million fewer people live in Rhode Island).
Tip: This to-scale comparison of Serbia vs. Rhode Island uses the Mercator projection, which distorts the size of regions near the poles.
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