ABC isosceles

ABC isosceles rights triangle the length or each leg is 1 unit what is the length of the hypotenuse AB in the exact form

Correct result:

c =  1.4142

Solution:

$$\begin{gathered} a=1 \\ b=1 \\ {a}^2+b^2=c^2 \\ c=\sqrt{a^2+b^2}=\sqrt{1^2+1^2}=\sqrt{2}=1.4142 \end{gathered}$$

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