Bellevue is about 3.7 times smaller than Rotterdam.

Rotterdam (map shows its 22 named neighbourhoods; the area covers the whole city) is approximately 319 sq km, while Bellevue is approximately 87 sq km, making Bellevue 27.14% the size of Rotterdam.
Tip: This to-scale comparison of Rotterdam vs. Bellevue uses the Mercator projection, which distorts the size of regions near the poles.
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