Final answer:
To round the number 1.87et=38.6 i.e. 2,085.5688 to five significant figures, round up to 2,085.6.
Step-by-step explanation:
When performing calculations, it's important to consider the precision of the numbers provided and to ensure the correct number of significant figures in the final answer.
For instance, if you have a calculator answer like 2,085.5688 and need to round to five significant figures, you would analyze the digit in the tenths place.
Since it is greater than 5, you would round up to get 2,085.6.