Question 1136175
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<pre>
Let x be the length of the leg (of each leg, since they are congruent, according to the condition).


Then by Pythagorean theorem


x^2 + x^2 = 6^2


2x^2 = 36


x^2 = 36/2 = 18


x = {{{sqrt(18)}}} = {{{3*sqrt(2)}}}.    <U>ANSWER</U>
</pre>

Solved.