Question

Find the mass of a cube that has a density 2.7 g/ml and measures 3 cm on each side

Answer 1

Answer:

m = 72.9 grams

Step-by-step explanation:

Given that,

The density of a cube, d = 2.7 g/mL

Side of the cube, l = 3 cm

The volume of the cube is :

$V=l^3\\\\V=(3)^3\ cm^3\\\\V=27\ cm^3$

Since, 1 mL = 1 cm³

Mass per unit volume is equal to the density of an object.

$m=d\times V\\\\m=2.7\ g/mL\times 27\ mL\\\\m=72.9\ g$

So, the mass of the cube is 72.9 grams.