Answer :
Final answer:
The unknown height of the object is approximately 2.5 cm.
Explanation:
The unknown height of the object is approximately 2.5 cm. Based on the given information, it is clear that the length of the object is between 2 and 3 cm. Since the bottom ruler contains no millimeter markings, the tenths digit can be estimated. One person may estimate the measurement as 2.4 cm, while another may estimate it as 2.6 cm. However, the 2 is known for certain, while the value of the tenths digit is uncertain. Therefore, the unknown height can be reported as 2.5 cm.
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