Respuesta :

The first choice is correct trust meh. Have a nice day/night !

For this case we have to:

Let "a" be the side of the square. Then, the area "A", will be given by:

[tex]A = a * a = a ^ 2[/tex]

Also, by the Pythagorean theorem we have to:

[tex]x ^ 2 = a ^ 2 + a ^ 2\\x ^ 2 = 2a ^ 2\\\frac {x ^ 2} {2} = a ^ 2[/tex]

Finally the area is:

[tex]A = \frac {x ^ 2} {2}[/tex]

Answer:

Option A

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