Answer :
Based on the information given, the scale that was used is 1millimeter = 9 meters.
From the information, we're told that in real life, the back patio is 27 meters long and it's 3 millimeters long in the drawing. Therefore, the scale will be:
= 27/3
= 9
This implies that the scale that was used is 1millimeter = 9 meters
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