The density of aluminium is 2.7 g/cm3. Find the mass in grams of a bar of aluminum measuring 3.2 cm by 2.7 cm by 12.7 cm

Answer 1

Density = mass / volume

We know the density is 2.7 g / cm3, and we can calculate the volume from the given dimensions of the bar.

The Volume = 3.2 cm x 2.7 cm x 12.7 cm = 109.73 cm³

Now we find the mass as follows:

109.73 cm³ x 2.7 g / cm³ = 296 g

or..

2.7 g / cm³ = x / 109.73cm³

x = mass = 296 g

Answer 2

density = 2.7 grams per cubic centimeter

3.2 x 2.7 x 12.7 = 109.728 cm^3

109.728(2,7) = 296.2656 grams