French Southern and Antarctic Lands is about 10 times smaller than Czech Republic.

Czech Republic is approximately 78,867 sq km, while French Southern and Antarctic Lands is approximately 7,829 sq km, making French Southern and Antarctic Lands 9.93% the size of Czech Republic.
Tip: This to-scale comparison of Czech Republic vs. French Southern and Antarctic Lands uses the Mercator projection, which distorts the size of regions near the poles.

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