What is the length of the hypotenuse of the right triangle below? plz

Hint: The rule of the 45-45-90 triangle is that both sides are x and the hypotenuse is x√2.

x = 5√2

To find the hypotenuse you multiply x by √2.

5√2 (√2)
5√4
5 (2)
10

The hypotenuse is 10.

The pythogorean theroem says that a^2+b^2=c^2, where a and b are legs of the right triangle and c is the hypothnuse. Therefore, when you add 5 times sqrt 2 and the other number sqrt 2 (i can't see it ) then it should get you 5+x=c^2. Then you add the two numbers and sqrt the sum. Because I can't see the other number, that's the best  I can do.

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Chope this lol