The mass of the body is found by simply weighing a person on a scale. The volume of the body is most easily and accurately determined by completely immersing a person in water and calculating the volume of water from the weight of water that is displaced (via underwater weighing).
Mailman Salary Statistics as of 2015. Average annual salary for a Mailman is $36600 based on statistics in the U.S. as of 2015. The highest salary recorded was $76765. The lowest salary reported was $15604. These figures will vary on a state to state basis as these are averages across all 50 states.
They work in all kinds of weather, as well as on Saturdays, sometimes carrying heavy mailbags while delivering on foot. Despite the physical requirements, competition is often high for mail carrier positions, which paid an average $53,860 a year as of May 2010, according to the Bureau of Labor Statistics. In addition, full-time workers earn 13 days of annual leave per year for the first three years and an additional 13 sick days.