The length of the side of a cube is 1.2 times | vedclass

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(D) The length of the side of the cube is $l = 1.2 	imes 10^{-2} \ m$. The volume of a cube is given by $V = l^3$. $V = (1.2 	imes 10^{-2} \ m)^3 =

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$1.7 	imes 10^{-6} \ m^3$

Vedclass · Answer

(D) The length of the side of the cube is $l = 1.2 	imes 10^{-2} \ m$. The volume of a cube is given by $V = l^3$. $V = (1.2 	imes 10^{-2} \ m)^3 = 1.728 	imes 10^{-6} \ m^3$. According to the rules of significant figures,the result of a multiplication or division should have the same number of significant figures as the measurement with the fewest significant figures. The given length $1.2 	imes 10^{-2} \ m$ has $2$ significant figures. Therefore,the volume should be rounded to $2$ significant figures. Rounding $1.728$ to $2$ significant figures gives $1.7$. Thus,the volume is $1.7 	imes 10^{-6} \ m^3$.

The length of the side of a cube is $1.2 \times 10^{-2} \ m$. Its volume up to correct significant figures is

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