To estimate the value of \( 6 \times \sqrt{2} \), we first need to know the approximate value of \( \sqrt{2} \). The value of \( \sqrt{2} \) is roughly \( 1.414 \).
Now, we can calculate:
\[ 6 \times \sqrt{2} \approx 6 \times 1.414 = 8.484 \]
So, the best estimate for \( 6 \times \sqrt{2} \) is approximately \( 8.5 \). If you have specific choices, please provide them for better guidance.