Cambodia is about 1.2 times smaller than Utah.

Utah is approximately 212,751 sq km, while Cambodia is approximately 181,035 sq km, making Cambodia 85.09% the size of Utah. Meanwhile, the population of Utah is ~2.8 million people (13.9 million more people live in Cambodia).
Tip: This to-scale comparison of Utah vs. Cambodia uses the Mercator projection, which distorts the size of regions near the poles.