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The perimeter of a rectangle is $40,$ and the length of one of its diagonals is $10 \sqrt{2}.$ Find the area of the rectangle.

 Apr 21, 2024
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A = 100 units2     

 

Perimeter 40 and diagonal 10 sqrt(2) indicate that this     

figure is the special case of rectangle, which is a square.    

Each side is 10, therefore the area is 10 10 = 100.     

 Apr 21, 2024

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