Find the Length of the Third Side of the Right $\sqrt{128} \approx 11.314$

Multiple Choice

Find the length of the third side of the right triangle. Where appropriate, give both an exact answer and an approximation to three decimal places.
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A) $\sqrt{128} \approx 11.314$
B) 16
C) 8
D) $\sqrt{192} \approx 13.856$