An object has a mass of 18 G and its volume is 2 centimeters cubed. Calculate the density.

To get the density, we divide mass over volume

density = mass/volume

density = (18 grams) / (2 cubic centimeters)

density = (18/2) grams per cubic cm

density = 9 grams per cubic cm

This means one unit block has 9 grams of this material. By "unit block", I mean 1 cm by 1 cm by 1 cm (volume = length*width*height = 1*1*1 = 1)