Write a method to find the volume and density of a human body.

The volume of a human body can be determined using the water displacement method. The person is fully submerged in a graduated tank, and the rise in water level is recorded as the volume. The density is then calculated using the formula: Density = Mass / Volume.

Related Questions:

  1. Two liquids A and B have densities of 1 g/mL and 1.2 g/mL, respectively. When both liquids are poured into a container, one liquid floats on top of the other. Which liquid is on top, and why?