To find the total volume of \( 1.5 \times 10^6 \) sugar cubes, you can multiply the number of cubes by the volume of one cube.
Given that the volume of one sugar cube is approximately 4.9 mL, the calculation is as follows:
\[ \text{Total Volume} = \text{Number of Cubes} \times \text{Volume of One Cube} \]
\[ \text{Total Volume} = 1.5 \times 10^6 \text{ cubes} \times 4.9 \text{ mL/cube} \]
Now, multiply:
\[ 1.5 \times 4.9 = 7.35 \]
Then, apply the scientific notation:
\[ 7.35 \times 10^6 \text{ mL} \]
So the total volume of \( 1.5 \times 10^6 \) sugar cubes is approximately \( 7.35 \times 10^6 \) mL or \( 7,350,000 \) mL.