To find the length of one side of a cube when you know its volume, you can use the formula for the volume of a cube:
\[ V = s^3 \]
where \( V \) is the volume and \( s \) is the length of one side of the cube.
Given that the volume \( V = 8 , \text{in}^3 \), you can set up the equation:
\[ s^3 = 8 \]
Now, to find \( s \), take the cube root of both sides:
\[ s = \sqrt[3]{8} \]
Calculating the cube root of 8, we find:
\[ s = 2 , \text{in.} \]
Therefore, the length of one side of the cube is \( 2 , \text{in.} \)