Question

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Answer 1

choose option B) k/cube root of n

This is right

Answer 2

option B

If there is one cube of length K

We divide it into n equal cube let length l of each cube

Now,

The volume remains same,

Volume of original cube = K³

The volume of one small cube = l³

And there are n cubes so the total volume of all that small cube = n * l³

As, volume remains same

n * l³ = K³

l³ = K³ / n

$l = \frac{k}{ \sqrt[3]{n} }$