Find the Length of the Third Side of the Right $\sqrt{68}=34.0$

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) $\sqrt{68}=34.0$
B) $\sqrt{580} \approx 24.083$
C) $\sqrt{2} \approx 1.414$
D) $\sqrt{68} \approx 8.246$