To estimate \( 3 \times \pi \), we can use the approximation \( \pi \approx 3.14 \).
Multiplying this gives:
\[ 3 \times 3.14 = 9.42 \]
For a more accurate estimate, we can use \( \pi \approx 3.14159 \):
\[ 3 \times 3.14159 \approx 9.42477 \]
Thus, a good estimate for \( 3 \times \pi \) is approximately \( 9.42 \), and a more precise value is approximately \( 9.425 \).