Yemen is about 3.5 times smaller than Sudan.

Sudan is approximately 1,861,484 sq km, while Yemen is approximately 527,968 sq km, making Yemen 28.36% the size of Sudan. Meanwhile, the population of Sudan is ~48.0 million people (17.0 million fewer people live in Yemen).
This to-scale comparison of Sudan vs. Yemen uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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