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Ravi arranges 343 identical wooden cubes into one large cube without any gaps.
He wants to know how many cubes lie along each edge of the big cube.
Find that number using prime factorisation.

Class 8Cube Root by Prime FactorisationCubes and Roots
  • A7
  • B9
  • C11
  • D21

Step-by-Step Solution

Edge cubes = cube root of total = cube root of 343. , so each edge has 7 cubes.
Answer: A) 7

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