Question

calculate the given value using significant figures: 22.033 cm + 34.045 cm + 5.5040 cm
a 61.6cm
b 112.12cm
c 615.82cm
d 61.582cm

Explanation:

Step1: Add the values

$22.033 + 34.045+5.5040=61.582$

Step2: Consider significant - figures for addition

For addition, we look at the decimal - place of the least precise number. 22.033, 34.045, and 5.5040 have three decimal places, two decimal places, and four decimal places respectively. The least precise number is 34.045 which has two decimal places. So we round 61.582 to one decimal place, getting 61.6.

Answer:

A. 61.6 cm