Question

state the number of significant figure in 4.0045

Answer 1

significant figure is 5
as 4.0045
starting and ending digit is not zero so we count whole digits. as 5 digits is significant nos.

Answer 2

Heya!!Here is your answer friend ⤵⤵

➡Significant figures = All certain digits and the one doubtful one( uncertain ).

Given number is , 4.0045

Now according TO the rules for writing the significant figures,

↔All non zeroes are significant .

↔All zeroes between non zeroes are significant.

Thus , number of significant figures= 5

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Hope it helps you ✌✌