Sri Lanka is about 11 times bigger than Brunei.

Brunei is approximately 5,765 sq km, while Sri Lanka is approximately 65,610 sq km, making Sri Lanka 1,038% larger than Brunei. Meanwhile, the population of Brunei is ~478,054 people (22.7 million more people live in Sri Lanka).
This to-scale comparison of Brunei vs. Sri Lanka uses the Mercator projection, which distorts the size of regions near the poles. Learn more.

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