Question

the number of signifucant figure present in in 0.00456 is​

Answer 1

Answer:

three

The quantities 0.456, 0.0456 and 0.00456 all contain 3 significant figures. In this case, you need to think in terms of exponential numbers. 0.0456 is 4.56 x 10-2 (only 3 significant figures) and 0.00456 is 4.56 x 10-3 (again, only three significant numbers). Thus, 470,000 has only 2 significant figures.