with what?..................
Answer:
It is important to analyze data to further understand what's going on. By analyzing data, you know more about what you are investigating. Without analyzing data, you may find it harder to figure something.
density= mass/volume
we need the volume of the metal to find the density, in which case the answer would be 64.2/volume=density
answer: focus or hypocenter
enplanation: when energy release at the focus, seismic waves travel outward from that point in all directions.