Dublin is about 33 times smaller than Melbourne.

Melbourne (the 27 councils of metropolitan Melbourne, without the Yarra Ranges, Cardinia, Mornington Peninsula and Nillumbik) is approximately 3,915 sq km, while Dublin is approximately 118 sq km, making Dublin 3.01% the size of Melbourne.
Tip: This to-scale comparison of Melbourne vs. Dublin uses the Mercator projection, which distorts the size of regions near the poles.
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