The volume of a right rectangular prism is calculated by multiplying its length, width, and height. The formula for volume is:
\[ \text{Volume} = \text{Length} \times \text{Width} \times \text{Height} \]
For the given dimensions:
- Length = 8 meters
- Width = 10 meters
- Height = 5 meters
Calculating the volume:
\[ \text{Volume} = 8 , \text{m} \times 10 , \text{m} \times 5 , \text{m} = 400 , \text{m}^3 \]
Since volume is expressed in cubic units, the unit that would properly express the volume of this right rectangular prism is cubic meters.
So the correct response is:
cubic meters