If two sides of a triangle have lengths 10.9 \(mm\) and 6.5 \(mm\), find in between which two numbers will the length of the third side occurs?
Answer:
If the two sidelengths \(a\) and \(b\) of the triangle are known, then the third side must lie between .
The length of the third side will occur between \(mm\) and \(mm\).
[Note: Insert the answer in ascending order with a maximum of \(1\) decimal place.]