A square with an area of 81 m2 has the following dimensions:
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Length is 9m
The dimensions of a square with an area 36 square inches are:Side lengths: Six inchesPerimeter: 24 inchesDiagonal measurement: 8.485 inches
the length of a side of a square is the square root of the area of the square.
Area is proportional to the square of the linear dimensions. If the linear dimensions are doubled, the area is increased by a factor of 22 = 4. The new area is 9 x 4 = 36 square inches.
The square root of 144 is 12.12 x 12 = 144 so the dimensions would be 12cm by 12cm