\[A_{s_{1}}=\pi b L_{1} \]\[\text q_{s_{1}}=\alpha C \]\[ \alpha<1\]
\[q_{s_{1}}=\pi b L_{1} \]\[\text q_{s_{1}}=\alpha C \]\[\alpha<2\]
\[A_{s_{2}}=\pi b_{u} L_{2} \]\[\text q_{s_{2}}=\alpha C_{\alpha}=1\]
\[q_{s_{2}}=\pi b_{u} L_{2} \]\[\text q_{s_{2}}=\alpha C_{\alpha}=1\]