1. Given a rectangular parallelepiped with sides 6, 6, and \( x \). For what values of the number \( x \) is the product of the surface area and the perimeter (the sum of the lengths of all edges) of this parallelepiped no more than \( \frac{224}{3} \) of its volume?
Write the answer in the form of an interval.

Answer: $[4 ; 9] \|[4,9]$