Решение:
\[ S = \frac{1}{2} \cdot d_1 \cdot d_2 \]
\[ d_1 \]
\[ d_2 \]
\[ d_1 = 14 \]
\[ d_2 = 6 \]
\[ S = \frac{1}{2} \cdot 14 \cdot 6 \]
\[ S = \frac{1}{2} \cdot 84 = 42 \]
Ответ: 42