Is 256 a perfect cube?

Explanation

Given:

cube root of `256`

`=> root(3)(256)=root(3)(2xx2xx2xx2xx2xx2xx2xx2)`

`=> root(3)(256)=2xx2root(3)(4)`

`=> root(3)(256)=4root(3)(4)`

`=> root(3)(256)=4xx1.5874`

`=> root(3)(256)=6.3496`

`=> root(3)(256)=6.35`

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