Illustration: The mass of a box is 2.3 kg. Two marbles of masses 2.15 g and 12.39 g are added to it. Find the total mass of the box to the correct number of significant figures.

The mass of a box measured by a grocer's balance is 2.300 kg .Two gold pieces of masses 20.15 g and 20.17 g are added to the box. What is the total mass of box to correct significant figures ?

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The mass of a box is 2.3 kg. Two marbles of mass equal to 2.15 kg and 2.48 kg are kept in it. The total mass of the box with correct significant figures is

The correct option is D 6.9 kg The arithmetic sum of the mass is =2.3+2.15+2.48=6.93 kg On rounding off to correct decimal place, we get, 6.9 kg.

The mass of a box is $2.3 kg$ . Two marbles of mass equal to $2.15 kg$ and $2.48 kg$ are kept in it. The total mass of the box with correct significant figures is

The correct option is D $6.9 kg$
The arithmetic sum of the mass is
$= 2.3 + 2.15 + 2.48 = 6.93 kg$
On rounding off to correct decimal place, we get, $6.9 kg$ .