Yemen is about 3.6 times bigger than Nepal.

Nepal is approximately 147,181 sq km, while Yemen is approximately 527,968 sq km, making Yemen 259% larger than Nepal. Meanwhile, the population of Nepal is ~29.6 million people (12.2 million more people live in Yemen).
Tip: This to-scale comparison of Nepal vs. Yemen uses the Mercator projection, which distorts the size of regions near the poles.
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