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Volume and Surface Area of Solids — MATHS STD 8 — Question

Gujarat BoardEnglish MediumSTD 8MATHSVolume and Surface Area of Solids1 Mark
MCQ
The diagonal of a cube is$9 \sqrt{3} cm$ long. Its total surface area is
  • A
    $243 cm^2$
  • ✓
    $486 cm^2$
  • C
    $324 cm^2$
  • D
    $648 cm^2$
✓

Answer

Correct option: B.
$486 cm^2$
B
$\sqrt{3} a = 9 \sqrt{3} \Rightarrow a = 9 cm$

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