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Surface Areas and Volumes — Maths STD 9 — Question

Gujarat BoardEnglish MediumSTD 9MathsSurface Areas and Volumes1 Mark
MCQ
$2\pi\text{cm}^2$ The surface area of a cube whose volume is 64cm3 is:
  • A
    108cm2
  • B
    96cm2
  • C
    64cm2
  • D
    72cm2
✓

Answer

  1. 96cm2

Solution:

Given: Volume of cube = 64cm3

⇒ a3 = 64

⇒ a3 = (4)3

⇒ a = 4cm

$\therefore$ Surface Area of cube = 6a2 = 6(4)2 = 96 sq. cm

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