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

The length of the side of a cube is $1.2 \times 10^{-2} \mathrm{~m}$. Its volume up to correct significant figures is
  1. $1.732 \times 10^{-6} \mathrm{~m}^3$
  2. $1.73 \times 10^{-6} \mathrm{~m}^3$
  3. $1.70 \times 10^{-6} \mathrm{~m}^3$
  4. $1.7 \times 10^{-6} \mathrm{~m}^3$

Solution

Length of cube, $1=1.2 \times 10^{-2} \mathrm{~m}$ $\therefore \quad$ Volume $=1^3=\left(1.2 \times 10^{-2}\right)^3=1.728 \times 10^{-6} \mathrm{~m}^3$ $\therefore$ The volume of cube upto correct significant figure is $\mathrm{V}=1.7 \times 10^{-6} \mathrm{~m}^3$

Asked in: AP EAMCET 2024 (21 May Shift 2)

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