To find where \( \sqrt{58} \) lies on a number line, we first approximate \( \sqrt{58} \).
We know that:
- \( 7^2 = 49 \)
- \( 8^2 = 64 \)
Since \( 49 < 58 < 64 \), it follows that: \[ 7 < \sqrt{58} < 8 \]
Next, we can narrow it down further by calculating \( \sqrt{58} \) approximately: \[ \sqrt{58} \approx 7.6158 \]
Now, we need to identify the nearest half. The number \( 7.6158 \) is between \( 7.5 \) and \( 8 \).
Thus, \( \sqrt{58} \) is between the rational number \( 7.5 \) and the whole number \( 8 \).
Therefore, the answer is: between 7.5 and 8.