Question

the number of significant figures in 0.00040 m is​

Answer 1

Answer:

Explanation:

answer: 2

rules for significant figures:all zeroes are significant, unless the zeroes are at the beginning of a numeral .

Answer 2

Answer:

2

Explanation:

We do not consider zeroes as significant figures until and unless they are to the left of a non zero number

Hope this helps you