Rhode Island is about 67 times smaller than Cambodia.

Cambodia is approximately 181,035 sq km, while Rhode Island is approximately 2,706 sq km, making Rhode Island 1.49% the size of Cambodia. Meanwhile, the population of Cambodia is ~16.7 million people (15.7 million fewer people live in Rhode Island).
Tip: This to-scale comparison of Cambodia vs. Rhode Island uses the Mercator projection, which distorts the size of regions near the poles.