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What is the side length of each piece?

Quilt squares are cut on the diagonal to form triangular quilt pieces. The hypotenuse of the resulting triangles is 3 inches long. What is the side length of each piece?
 
Key
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r= sqr root
 
a) 34 r2 inches
b) 17 r3 inches
c) 17 r2 inches
d) 13 inches
 
I tried to do the Pythogorean theroem but there isn't enough information to use that so I'm not sure what to use to solve this.

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Kenneth S. | Algebra/Trig/Precalculus/Calculus Instructor Can Be Your TutorAlgebra/Trig/Precalculus/Calculus Instru...
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The triangular pieces will be isosceles right triangles, so each leg measures 3/√2 inches.
 
None of the answers a through d is even remotely useful.