Question 343299
If it is isosceles, then both legs are length 6 inches.
We can use the short-cut ratio for isosceles right triangles ==> 1:1:sqrt(2)
and get 6:6:6*sqrt(2)...
Thus the hypotenuse is {{{6*sqrt(2)}}}
We could also use the Pythagorean Theorem, but this is far easier...