1. **State the problem:** We have a box of sugar cubes with a total mass of 500 g and containing 144 cubes. The box dimensions are 19 cm by 10 cm by 3 cm. 2. **Find the mass of one sugar cube:** The total mass is 500 g and there are 144 cubes. Mass of one cube = $\frac{500}{144} \approx 3.47$ g 3. **Find the volume of the box:** Volume = length \times width \times height Volume = $19 \times 10 \times 3 = 570$ cm$^3$ 4. **Find the volume of one sugar cube:** Volume of one cube = $\frac{\text{Volume of box}}{\text{Number of cubes}} = \frac{570}{144} \approx 3.96$ cm$^3$ **Final answers:** - Mass of one sugar cube: 3.47 g - Volume of the box: 570 cm$^3$ - Volume of one sugar cube: 3.96 cm$^3$