1. The problem involves expressing a measurement with its uncertainty, given as $4.6$ cm³ ± some value in cm³. 2. The general form for a measurement with uncertainty is $\text{value} \pm \text{uncertainty}$, where the uncertainty represents the possible error or variation in the measurement. 3. To complete the expression, you need to determine or provide the uncertainty value in cm³. 4. Without additional information, the uncertainty cannot be calculated or assumed; it must be given or estimated based on measurement precision or instrument limits. 5. Once the uncertainty is known, the measurement can be written as $4.6 \pm x$ cm³, where $x$ is the uncertainty. 6. This notation means the true volume is expected to lie between $4.6 - x$ cm³ and $4.6 + x$ cm³. 7. If you provide the uncertainty value, I can help you write the complete measurement with uncertainty.