Question 386995
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Hi,         
Let x represent the length of each of the sides in this isosceles right triangle
Applying the Pythagorean Theorem
  x^2 + x^2 = 12in^2
Solving for x
    2x^2 = 144
     x^2 = 72
      x = ± sqrt(72)  Tossing out negative solution
      x = 8.49in, the length of each side (rounded to the nearest hundredth)