Answer :

Cube root would be 5.41
Cube root is when a number cubed gives you the original number
Cubed means a number times a number,given the amount of times to multiply that number
For example- Cube root of 125 is 5*5*5
AL2006

It's an irrational number, so you can get as close as you need to, but
you can't write it exactly with numbers.  As a decimal, it never ends. 

-- The number  5.4175  is within  0.00003%  of the actual value.

-- (5.4175)³  is less than  0.000084%  smaller than 159 .