Verified Answer :

Certainly! Let's solve this step-by-step:

1. Determine the dimensions of the original chocolate bar:
- Length = 16 cm
- Width = 8 cm
- Height = 4 cm

2. Calculate the volume of the original chocolate bar:
The volume \(\( V \)\) of a rectangular prism (or bar) can be calculated using the formula:
\(\[ V = \text{Length} \times \text{Width} \times \text{Height} \]\)
Plugging in the dimensions:
\(\[ V = 16 \, \text{cm} \times 8 \, \text{cm} \times 4 \, \text{cm} = 512 \, \text{cubic centimeters (cm}^3\text{)} \]\)

3. Determine the volume of each chocolate cube:
Given that the total volume of the chocolate bar is divided into 8 cubes:
\(\[ \text{Volume of each cube} = \frac{\text{Total Volume of the bar}}{\text{Number of cubes}} = \frac{512 \, \text{cm}^3}{8} = 64 \, \text{cm}^3 \]\)

4. Determine the length of each side of a cube:
Since each cube is a perfect cube, the volume of a cube is given by:
\(\[ \text{Volume} = \text{side length}^3 \]\)
Let the side length of each cube be \(\( s \)\). Then:
\(\[ s^3 = 64 \, \text{cm}^3 \]\)

5. Solve for the side length \(\( s \)\):
To find \(\( s \)\), we take the cube root of 64:
\(\[ s = \sqrt[3]{64} = 4 \, \text{cm} \]\)

Thus, the length of each side of the cube is approximately \(\( 4 \)\) cm.