Rhode Island is about 18 times smaller than Slovakia.

Slovakia is approximately 49,035 sq km, while Rhode Island is approximately 2,706 sq km, making Rhode Island 5.52% the size of Slovakia. Meanwhile, the population of Slovakia is ~5.4 million people (4.4 million fewer people live in Rhode Island).
Tip: This to-scale comparison of Slovakia vs. Rhode Island uses the Mercator projection, which distorts the size of regions near the poles.
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