SOLUTION: This may be super easy but i can't figure out the cubed root of 81... i've tried 3, 4, 5, 6 and nothing works... please help! i'm so lost!! thanks :)

Algebra ->  Square-cubic-other-roots -> SOLUTION: This may be super easy but i can't figure out the cubed root of 81... i've tried 3, 4, 5, 6 and nothing works... please help! i'm so lost!! thanks :)      Log On


   

Question 15652: This may be super easy but i can't figure out the cubed root of 81... i've tried 3, 4, 5, 6 and nothing works... please help! i'm so lost!! thanks :)
Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
It's no surprise you are lost when you try integers as the cube root of 81.
You will not find an integer that, when cubed, will give you 81.
The cube root of 81 is an irrational number = 4.32674871092...
You could simplify it to:
9%5E%282%2F3%29 or 3%5E%284%2F3%29