Question

Which measurement contains three significant figures?
a. 0.08cm
b. 0.080cm
c. 800cm
d. 8.08cm

Answer 1

is it D ?

Answer 2

It indeed is answer D. A has 1 significant figure, the 8.
B has 2, the 8 followed by the 0.
C has 1, the 8.
D however has 3, it's obvious which are (8, 0 and the 8).
Remember, with significant figures leading zeros and (if they do not add precision to the figure) trailing zeros do not count.

Answer 3

Thank You so much :)