==> Jot down notes before and after making each call, and avoid calling during business hours when people are busy.
==> Save all emails and bills, and follow up to make sure people did what they said they would do.
Before taking a pressure reading, it is necessary for the technician to first allow the temperature of the cylinder to stabilize to room temperature because a comparison with a temperature-pressure chart is only valid and true when both temperature and pressure of the refrigerant are stable.
Answer:
34.3cm
Explanation:
Attached is the full solution
