Sydney is about 36 times bigger than Paris.

Paris is approximately 105 sq km, while Sydney (the 30 councils of metropolitan Sydney, without the Blue Mountains, Hawkesbury, Wollondilly and the Central Coast) is approximately 3,810 sq km, making Sydney 3,515% larger than Paris.
Tip: This to-scale comparison of Paris vs. Sydney uses the Mercator projection, which distorts the size of regions near the poles.
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