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.
The United States Postal Service offers jobs that have great benefits and relatively high pay, given that they do not require a certain level of formal education. As of 2010, postal workers reported a median annual income of $53,090 and a median hourly wage of $25.52. Although there are no formal educational requirements for this job, the postal service does have several requirements an applicant must meet before being hired.