Final answer:
The most accurate measurement compared to the actual length of 15 cm is 15.03 cm, which is only 0.03 cm greater than the actual length, thus making it the closest and most precise measurement provided.
Step-by-step explanation:
The question is asking to compare three measurements to the actual length, and identify which measurement is the most accurate. Accuracy in measurements refers to how close a measured value is to the true value or the actual length. The actual length given is 15 cm. The three measurements to consider are: 15.03 cm, 14.92 cm, and 15.30 cm.
Here's how each measurement compares to the actual length of 15 cm:
- 15.03 cm is 0.03 cm over the actual length.
- 14.92 cm is 0.08 cm under the actual length.
- 15.30 cm is 0.30 cm over the actual length.
Comparing the three measurements, we can see that 15.03 cm is the closest to the actual length. Therefore, 15.03 cm is the most accurate measurement among the options given.
When it comes to measurement accuracy, it is important to use instruments that provide the least uncertainty. For example, using a ruler with millimeter markings can increase the precision and thus the accuracy.
In scenarios where one has varying measurements, the measurement that deviates the least from the actual or true value is considered the most accurate. In this case, all the measurements provided were extremely close to the actual length, but 15.03 cm differed the least, making it the most accurate.