1. **State the problem:** We need to find the volume of a rectangular prism with dimensions given by the number of unit cubes along its width, height, and depth. 2. **Identify the dimensions:** The front face is 5 cubes wide and 3 cubes tall, so width = 5 and height = 3. The top face shows a length of about 8 cubes, so length = 8. The right side shows a depth of about 4 cubes, so depth = 4. 3. **Formula for volume of a rectangular prism:** $$\text{Volume} = \text{length} \times \text{width} \times \text{height}$$ 4. **Apply the formula:** $$\text{Volume} = 8 \times 5 \times 3$$ 5. **Calculate step-by-step:** $$8 \times 5 = 40$$ $$40 \times 3 = 120$$ 6. **Final answer:** The volume of the rectangular prism is $$\boxed{120}$$ unit cubes.