Read the temperature with the correct number of significant figures.
A)87°C
B)87.2°C
C)87.20°C
D)87.200°C
E)87.2000°C

Question

Read the temperature with the correct number of significant figures. 
A)87°C 
B)87.2°C 
C)87.20°C 
D)87.200°C 
E)87.2000°C

Quizplus · Accepted Answer

The temperature reading has four digits after the decimal point, indicating an extremely precise measurement. However, since the last digit (0) is a placeholder and does not convey any additional information, it can be dropped, leaving us with two significant figures (87.20°C). Any additional significant figures beyond this would imply a level of precision that is not supported by the measurement instrument. Therefore, the correct number of significant figures is two, and choice C is the best option.

Read the Temperature with the Correct Number of Significant Figures