It is: 128/4 = 32 and 32*32 = 1024 square cm
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When the area of a square is 36cm2, its perimeter is: 24 cm
A square with a perimeter of 24 cm has an area of: 36 cm2
Area of square = 81 cm2 so side of square = 9 cm and then perimeter = 4*side = 36 cm.
P = 60 cm
Each side = 20/4 = 5 cm Area = 5*5 = 25 square cm