Final answer:
The density of the cube is approximately 1.318 g/cm³.
Step-by-step explanation:
The density of a substance can be calculated by dividing its mass by its volume. In the case of a cube, the volume is calculated by cubing the edge length. To find the density of the given cube, we divide the mass (63.54g) by the volume, which is calculated by multiplying the length (4.3cm), width (6.1cm), and height (2.1cm) of the cube.
Density = mass/volume
Density = 63.54g / (4.3cm * 6.1cm * 2.1cm)
Density ≈ 1.318 g/cm³