Add the numbers 8.31, 13.151," and "0.0039 and express the result to an appropriate number of significant figures.

Add the numbers 8.31, 13.151," and "0.0039 and express the result to a

1.	Add the numbers 8.31, 13.151," and "0.0039 and express the result to an appropriate number of significant figures.
Answer» SOLUTION :`8.31+13.151+0.0039=21.4649= 21.47` Here, 8.31 has least NUMBER of decimal place (TWO). So, the result is ALSO rounded off up to second place of decimal.