If you have a graduated cylinder containing 15.5 ml and this volume changes to 95.2 ml after a metal with a mass of 7.95 g is dropped into the graduated cylinder, then what is the density of this metal?

The density  of the metal  is  calculate as below

density =  mass/volume

volume  of the metal= volume of the cylinder  after  the metal was dropped- volume  of cylinder  before the  meal was dropped 

volume = 95.2 -15.5 - 79.7 ml
mass = 7.95 g

density =  7.95/79.7 = 0.0997 g/ml