\[\frac{\pi - 3}{2}:\]
\[3,14 - 3 < \pi - 3 < 3,15 - 3\]
\[0,14 < \pi - 3 < 0,15\]
\[\frac{0,14}{2} < \frac{\pi - 3}{2} < \frac{0,15}{2}\]
\[0,07 < \frac{\pi - 3}{2} < 0,075\]