EXPLANATION
Let's see the facts:
The volume of the ramp is equivalent to the volume of a triangular prism volume.
It is given by the following equation:
![\text{Volume}=(1)/(2)\cdot b\cdot h\cdot l](https://img.qammunity.org/2023/formulas/mathematics/college/94nhbbpgolxwhzk3g9th8lsdy5hsr35s48.png)
Where, b=12 ft, l= 8ft, h=5ft
Replacing terms:
![Volume=(1)/(2)\cdot12\cdot5\cdot8](https://img.qammunity.org/2023/formulas/mathematics/college/mac87dv98k36728yvyrwdcfur72h2g8v7r.png)
Multiplying numbers:
![\text{Volume}=(1)/(2)\cdot480=240](https://img.qammunity.org/2023/formulas/mathematics/college/c3yhctda5re3qofdwezi7m9kovmnl1ay2k.png)
The volume of the ramp is 240 ft^3