Cambodia is about 67 times bigger than Rhode Island.

Rhode Island is approximately 2,706 sq km, while Cambodia is approximately 181,035 sq km, making Cambodia 6,590% larger than Rhode Island. Meanwhile, the population of Rhode Island is ~1.1 million people (15.7 million more people live in Cambodia).
Tip: This to-scale comparison of Rhode Island vs. Cambodia uses the Mercator projection, which distorts the size of regions near the poles.