Density of solid experiment

Procedure:

$1.$Find the mass of an object by dragging it to the electronic balance. Record its mass in the data table.

$2.$Read the graduated cylinder. Record in the data table the volume of the water displaced by the object.

$3.$ Find the density of all four objects.

Data table

$\backslash$table$[[$Object$,$Mass$($g$),\backslash$table$[[$Final$],[$Volum$],[$e $($ml$)]],\backslash$table$[[$Initial Volume$],[($ml$)]],\backslash$table$[[$Volume of$],[$object$],[($Final $-],[$initial$)]],\backslash$table$[[$Density of$],[$object$($g$/$ml$)],[$Mass$/$Volume$]]],[$Object $1,0,0,7\mathrm{.}5,55,50,,],[$Object $2,10,0,2\mathrm{.}4,59,50,,],[$Object $3,10,0,6\mathrm{.}8,61,50,,],[$Object $4,20,0,1\mathrm{.}4,65,50,,]]$

The numbers in the "Mass" section show what was on the scale.

there was $50mL$ before each object was dropped in the water

In the "final volume $($ml$)"$ section show the water rise to that level $($I$\text{'}$m not sure if those numbers are in the right section

please help calculate this, thanks