Gujarat BoardEnglish MediumSTD 8MATHSMensuration1 Mark
MCQ
The volume of a cube is $64cm^3.$ Its surface area is:
A
$16cm^2$
B
$64cm^2$
✓
$96cm^2$
D
$128cm^2$
✓
Answer
Correct option: C.
$96cm^2$
C. $96cm^2$
Solution:
Let the side of the cube be a. Then,
Volume of cube $= a^3 - 64$ [given]
$\Rightarrow a = 4$
Now, surface area of the cube $= a^2 = 6 × 4^2 = 96cm^2.$
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