The mass of a box is 2.3, kg. Adding 2.15, g | vedclass

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(C) First,convert all masses to $kg$: $2.15\, g = 0.00215\, kg$ $12.39\, g = 0.01239\, kg$ Total mass $= 2.3 + 0.00215 + 0.01239 = 2.31454\, kg$. Acco

Vedclass · Accepted Answer

$2.3$

Vedclass · Answer

(C) First,convert all masses to $kg$: $2.15\, g = 0.00215\, kg$ $12.39\, g = 0.01239\, kg$ Total mass $= 2.3 + 0.00215 + 0.01239 = 2.31454\, kg$. According to the rules of significant figures in addition,the result should be reported to the same number of decimal places as the measurement with the fewest decimal places. $2.3$ has one decimal place. Therefore,rounding $2.31454$ to one decimal place gives $2.3\, kg$.

The mass of a box is $2.3\, kg$. Adding $2.15\, g$ and $12.39\, g$ to it,the total mass is ........ $kg$.

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