Calculating Area Square.
Let x be the side length of the square.
a²+x² = 3²
a = √(9-x²) units.
b = x-a
b = (x-√(9-x²)) units.
Therefore;
x/3 = (x-√(9-x²))/2
Cross Multiply.
2x = 3x-3√(9-x²)
3√(9-x²) = x
9(9-x²) = x²
81 = 10x²
x² = 81/10
x² = 8.1 square units.
Where x² is the area of the square.
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