Questions: Cubes are three-dimensional square shapes that have equal sides. What is the density of a cube that has a mass of 12.6 g and a measured side length of 4.1 cm? (Density: D = m/v)
.1828 g / cm^3
.3254 g / cm^3
3.073 g / cm^3
68.92 g / cm^3
Transcript text: Cubes are three-dimensional square shapes that have equal sides. What is the density of a cube that has a mass of 12.6 g and a measured side length of 4.1 cm ? (Density: $D=\frac{m}{v}$ )
$.1828 \mathrm{~g} / \mathrm{cm}^{3}$
$.3254 \mathrm{~g} / \mathrm{cm}^{3}$
$3.073 \mathrm{~g} / \mathrm{cm}^{3}$
$68.92 \mathrm{~g} / \mathrm{cm}^{3}$
Solution
Solution Steps
Step 1: Calculate the Volume of the Cube
The volume \( V \) of a cube is given by the formula:
\[ V = \text{side length}^3 \]
Given the side length is 4.1 cm:
\[ V = (4.1 \, \text{cm})^3 = 4.1^3 = 68.921 \, \text{cm}^3 \]
Step 2: Calculate the Density
The density \( D \) is given by the formula:
\[ D = \frac{m}{V} \]
where \( m \) is the mass and \( V \) is the volume. Given the mass \( m = 12.6 \, \text{g} \) and the volume \( V = 68.921 \, \text{cm}^3 \):
\[ D = \frac{12.6 \, \text{g}}{68.921 \, \text{cm}^3} = 0.1828 \, \text{g/cm}^3 \]