Hi!
Given the area formula ~ A = LW
We need to multiply the two values:
![\sqrt[4]{11} * \sqrt[4]{3}](https://tex.z-dn.net/?f=%5Csqrt%5B4%5D%7B11%7D%20%2A%20%5Csqrt%5B4%5D%7B3%7D)
Since they have the same root, 4, we can multiply what's inside of the radical and give it the same root.

Now, we apply the same root as before:
![\sqrt[4]{33}](https://tex.z-dn.net/?f=%5Csqrt%5B4%5D%7B33%7D)
Therefore, your answer is ![\sqrt[4]{33}](https://tex.z-dn.net/?f=%5Csqrt%5B4%5D%7B33%7D)
Now, if you need that as a numerical value rather than a radical, it's roughly 