Add 7.21, 12.141 and 0.0028 and express the result to an appropriate number of significant figures.

Add 7.21, 12.141 and 0.0028 and express the result to an appropriate n

1.	Add 7.21, 12.141 and 0.0028 and express the result to an appropriate number of significant figures.
Answer» Solution :`7.21+12.141+0.0028=19.3538` Correct SUM = 19.35 (Rounded off UPTO 2 decimal place) Here 7.21 has minimum NUMBER of decimal places (two), so result in rounded off upto second place of decimal point.