Question

How many significant figures does this number have?

6,253.862 km

4
3
0
7

Answer 1

The number 6,253.862 km has 7 significant figures. All non-zero digits are significant, and any zeros between significant digits are also counted as significant. Therefore, in this case, all the digits (6, 2, 5, 3, 8, 6, 2) are considered significant.