To convert cubic inches (in³) to square inches (in²), you'll need to work with a given height or thickness, as the two units measure different properties (volume versus area).
If you're looking to find an area equivalent to 336 cubic inches, you'll need to specify a height.
For example, if you have a height (h):
\[ \text{Area (in²)} = \frac{\text{Volume (in³)}}{\text{Height (in)}} \]
If you choose a specific height, you can plug that into the equation to find the area in square inches. Please provide a height if you want a specific conversion!