Measure the area for paving? (4)

I believe the answer is:

yard

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'measure' is the definition.
(I know that yard is a type of large integer)

I don't understand the rest of the clue.

(Other definitions for yard that I've seen before include "Tract of land enclosed for a particular purpose" , "Enclosure by house" , "Unit of measure" , "A little under a metre" , "compound" .)

I've seen this clue in the Evening Standard.

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