Hello!
To find the volume of the prism you first have to find the volume of a cube
To do this you use the equation
[tex]V = a^{3} [/tex]
V is volume
a is side length
Put in the values you know
[tex]V = \frac{1}{2}^{3} [/tex]
Solve
V = 0.125
Now to find the volume of the prism you multiply the volume of one cube by the amount of cubes in the prism
0.125 * 8 = 1
The answer is 1 cubic inch
Hope this helps!