Brazil is about 35 times bigger than Guinea.

Guinea is approximately 245,857 sq km, while Brazil is approximately 8,515,770 sq km, making Brazil 3,364% larger than Guinea. Meanwhile, the population of Guinea is ~15.1 million people (197.7 million more people live in Brazil).
Tip: This to-scale comparison of Guinea vs. Brazil uses the Mercator projection, which distorts the size of regions near the poles.
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