Alexandria is about 101 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 Alexandria is approximately 39 sq km, making Alexandria 0.99% the size of Melbourne.
Tip: This to-scale comparison of Melbourne vs. Alexandria uses the Mercator projection, which distorts the size of regions near the poles.
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