Final answer:
The length of tq is estimated to be 2.5 cm using the bottom ruler or 2.55 cm using the top ruler.
Step-by-step explanation:
The length of tq is between 2 and 3 centimeters. Using the bottom ruler, which does not have millimeter markings, we can estimate the length to the nearest tenth. One person may estimate the length as 2.5 cm, while another person may estimate it as 2.4 cm or 2.6 cm. The value of the tenth digit is uncertain in this case. However, if we use the top ruler, which contains marks for tenths of a centimeter (millimeters), we can measure the length as 2.55 cm.
In this case, we can estimate the hundredth digit because we know for certain that the tenth digit is 5. Another person may estimate the length as 2.54 cm or 2.56 cm, with the hundredth digit being uncertain. Therefore, the length of tq in centimeters to the nearest tenth is estimated to be 2.5 cm using the bottom ruler, or 2.55 cm using the top ruler.