Final answer:
The acceptable range of fluid level for the preliminary cockpit preparation on the HYD SD page is between 19.8 ml and 20 ml. The measured amount can be reported as approximately 19.9 ml, considering the uncertainty. Graduation marks on the graduated cylinder may contain inaccuracies.
Step-by-step explanation:
The acceptable range of fluid level for the preliminary cockpit preparation on the HYD SD page is between 19.8 ml and 20 ml. By checking where the bottom of the meniscus lies, referencing the ten smaller lines, we can determine that the amount of water lies within this range.
To estimate the uncertainty, we can make an approximate guess that the level is less than 20 ml, but greater than 19.8 ml, and report the measured amount as approximately 19.9 ml. It is important to note that the graduation marks on the graduated cylinder may contain inaccuracies, providing readings slightly different from the actual volume of liquid present.