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The volume of a cube is 512cm3. Find the length of its side

Mathematics
WAEC 2014

The volume of a cube is 512cm3. Find the length of its side
  • A. 6cm
  • B. 7cm
  • C. 8cm
  • D. 9cm
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Correct Answer: Option C
Explanation
volume of cube = L x L x L

512cm3 = L3

L3 = 512cm3

L = 3\(\sqrt{512}\)

L (512)\(\frac{1}{3}\)

= (29)\(\frac{1}{3}\)

23 = 8cm

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WAEC offline past questions - with all answers and explanations in one app - Download for free
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