Areas scale by the square of the distance of a side, while distances scale linearly.
Think about one foot vs. two feet, and the area of a square with sides of one foot vs. two feet. The area of a square with sides of one foot is one square foot, but the area of a square with sides of two feet is four square feet.
When you are talking about square meters you are talking about squares each with a side of a meter. That is obviously going to be more than 3 times that of a square with sides of 1/3 of a meter.
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