To find the difference in the lengths of the diagonals of the two tiles, we simply subtract the length of the shorter diagonal from the length of the longer diagonal.
The lengths of the diagonals are:
- Tile 1: \( 9\sqrt{2} \) cm
- Tile 2: \( 8\sqrt{2} \) cm
Now, calculate the difference:
\[ 9\sqrt{2} - 8\sqrt{2} = (9 - 8)\sqrt{2} = 1\sqrt{2} = \sqrt{2} \text{ cm} \]
Thus, the difference in the length of the diagonals is \( \sqrt{2} \) centimeters.