Answer
Hypotenuse = 12 in.
Work Step by Step
By Pythagoras Theorem
$Hypotenuse^{2}=(6\sqrt 2)^{2}+(6\sqrt 2)^{2}$
$Hypotenuse^{2}=72+72$
$Hypotenuse^{2}=144$
Hypotenuse = 12 in.
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