Crossword Genius

100 square metres (3)

Ross

I believe the answer is:

are

'100 square metres' is the definition.
(I've seen this before)

This is all the clue.

(Other definitions for are that I've seen before include "Era (anag.)" , "(We/they/you) exist" , "(They/you/we) exist" , "Exist; square measure" , "is for more than one" .)

I've seen this clue in the Sydney Morning Herald.
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