Heard Island and McDonald Islands is about 10 times smaller than Cabo Verde.

Cabo Verde is approximately 4,033 sq km, while Heard Island and McDonald Islands is approximately 412 sq km, making Heard Island and McDonald Islands 10.22% the size of Cabo Verde.
Tip: This to-scale comparison of Cabo Verde vs. Heard Island and McDonald Islands uses the Mercator projection, which distorts the size of regions near the poles.

Compare further: Heard Island and McDonald Islands vs. Cabo Verde

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