$\frac{\pi}{\sqrt{2}}$

$\frac{\pi}{2}$

$\sqrt{2} \pi$

$2 \pi$

$\frac{\pi}{8} \log 2$

$-\frac{\pi}{2} \log 2$

$-\frac{\pi}{4} \log 2$

$2 \pi \log 2$

$\log \left(\frac{7}{3}\right)$

$\frac{1}{4} \log \left(\frac{7}{3}\right)$

$\frac{1}{4} \log 7$

$\log 7$

$\frac{8 \sqrt{2}}{3}-3$

$\frac{16 \sqrt{2}}{3}+12$

$\frac{16 \sqrt{2}}{3}-3$

$\frac{8 \sqrt{2}}{3}+12$