MCQ
$2\pi\text{cm}^2$ The surface area of a cube whose volume is $64\ cm^3$ is:
- A$108\ cm^2$
- ✓$96\ cm^2$
- C$64\ cm^2$
- D$72\ cm^2$
✓
Answer
Correct option: B.
$96\ cm^2$
$\text { Given: Volume of cube }=64 \mathrm{~cm}^3$
$\Rightarrow a^3=64$
$\Rightarrow a^3=(4)^3$
$\Rightarrow a=4 \mathrm{~cm}$
$\therefore \text { Surface Area of cube }=6 a^2=6(4)^2=96 \text { sq. } \mathrm{cm}$
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