The volume \( V \) of a rectangular prism can be calculated using the formula:
\[ V = \text{length} \times \text{width} \times \text{height} \]
Given the dimensions of the prism:
- Length = 10 units
- Width = 2 units
- Height = 3 units
Substituting these values into the formula:
\[ V = 10 \times 2 \times 3 \]
Calculating this:
\[ V = 20 \times 3 = 60 \]
Thus, the volume of the rectangular prism is \( 60 \) cubic units.
Answer: 60 units cubed