3. The diagonals of a rhombus differ by $14 \mathrm{~cm}$. If we extend the longer diagonal by $2 \mathrm{~cm}$, and the shorter one by $8 \mathrm{~cm}$, the area of the rhombus will increase by $144 \mathrm{~cm}^{2}$. What are the lengths of the diagonals of the original rhombus?