Use unit cubes to find the volume of the right rectangular prism. 4ft long 3ft height 6ft depth

To find the volume of the right rectangular prism, we multiply the length, width, and height of the prism.

Given that the prism is:
- 4ft long
- 3ft high
- 6ft deep

We can use unit cubes to represent each measurement and find the volume.

Since the length is 4ft, we use 4 unit cubes in the length direction:

|____|____|____|____|

The height is 3ft, so we use 3 unit cubes in the height direction:

|____|____|____|____|
| | | | |
|____|____|____|____|

The depth is 6ft, so we use 6 unit cubes in the depth direction:

|____|____|____|____|
| | | | |
|____|____|____|____|
| | | | |
|____|____|____|____|
| | | | |
|____|____|____|____|
| | | | |
|____|____|____|____|
| | | | |
|____|____|____|____|

Now, we count the total number of unit cubes used, which is 4 x 3 x 6 = 72 unit cubes.

Therefore, the volume of the right rectangular prism is 72 cubic feet.