Question

A cube measures 3.0cm on each side and has a mass of 25 g .what is the density of the cube ?

Answer 1

Answer:

Density = .034 kg/m^3

Explanation:

Because the formula for density is

D = mass / volume

we need to first find the volume of the cube.

Volume of a cube = a^3

Area of a side:

.03 * .03 = .09 m^2

Volume :

0.9^3 = .729 m^3

Now to calculate the density of the cube:

Density = .025 kg / .729 m^3

Density = .034 kg/m^3

Answer 2

Answer: (0.308 (g/cm^3) or 308.641 kg/(m^3))

Explanation:
Length of side = 3/100 = 0.03 meters

Volume of the cube = (length of side) to the power of 3 or ^3
= (0.03)^3
= (0.000081 or 81 x 10^-6) meters cubed

Mass of cube = 25/1000
=0.025 kg

Density = mass/volume
=0.025/0.000081
=308.641 kg/(m^3)