The mass of a box measured by a grocerís balance is 2.300 kg. Two gold pieces of masses 20.15 g and 20.17 g are added to the box. What is (a) the total mass of the box, (b) the difference in the masses of the pieces to correct significant figures ?
NCERT Solutions for Class 11 Physics Part 1 Chapter 2 Exercise 12



The total mass of the box is 2300040.32 gram or 2300.04032 kg
The difference in the masses is of
40.3199999998 gram or 0.04031999999979999 kg