Final answer:
1500 milliliters is larger than 1 liter because 1500 mL is greater than 1000 mL. For the second part of the question, 12 cm is a measure of length and 12 milliliters is a volume; they are different measurements and do not directly compare unless referring to a volume measurement of a cube.
Step-by-step explanation:
To determine which is larger between 1 liter and 1500 milliliters, we simply need to compare their measurements. We know that 1 liter (1 L) is equivalent to 1000 milliliters (1000 mL). Therefore, 1500 milliliters is larger than 1 liter since 1500 mL > 1 L (or 1000 mL).
For the second part, comparing 12 cm and 12 milliliters is slightly trickier because these are different types of measurements; one is a measure of length and the other is a volume. However, 1 milliliter is equivalent to 1 cubic centimeter (1 mL = 1 cm³). Therefore, unless we are referring to a cube with dimensions of 1 cm x 1 cm x 12 cm, we cannot directly compare 12 cm to 12 mL in terms of size since one is a length and the other is a volume.