MCQ
The total surface area of a cube is $96\ cm^2.$ Find its lateral surface area.
- ✓$64\ cm^2$
- B$512\ cm^2$
- C$27\ cm^2$
- D$32\ cm^2$
✓
Answer
Correct option: A.
$64\ cm^2$
Total surface area of cube $=6 a ^2$ (let a be a side of cube)
So, $6 a^2=96$
$a^2=\frac{96}{6}=16$
$a=4 cm$
Now, lateral surface area of cube is $4 a^2$
So, $4 a^2=4 \times(4)^2$
$=4 \times 16$
$=64 cm^2$
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