Three measurements are made as 18.425 cm, 7.21 cm and 5.0 cm. The sum of measurements upto correct number of significant figure is

Three measurements are made as 18.425 cm, 7.21 cm and 5.0 cm. The sum

1.	Three measurements are made as 18.425 cm, 7.21 cm and 5.0 cm. The sum of measurements upto correct number of significant figure is
Answer» 30.635 CM 30.64 сm 30.63 cm 30.6 cm Solution :SUM of the measurements is correct only upto one place of decimal corresponding to the LEAST NUMBER of decimal places. 18.425 + 7.21 + 5.0 = 30.635 = 30.6 cm