Question

What is the correct answer if the following number is rounded to 3 significant figures?

0.5661 m

0.600 m
0.570 m
0.566 m
0.500 m

Answer 1

To round the number 0.5661 m to 3 significant figures, we look at the first three significant digits, which are 5, 6, and 6. We then look at the next digit (the fourth significant figure), which is 1. Since 1 is less than 5, we do not round up.

Therefore, rounded to 3 significant figures, 0.5661 m becomes 0.566 m.

So the correct answer is:

**0.566 m**