Utah is about 1.2 times bigger than Cambodia.

Cambodia is approximately 181,035 sq km, while Utah is approximately 212,751 sq km, making Utah 18% larger than Cambodia. Meanwhile, the population of Cambodia is ~16.7 million people (13.9 million fewer people live in Utah).
Tip: This to-scale comparison of Cambodia vs. Utah uses the Mercator projection, which distorts the size of regions near the poles.