$z_1+\frac{p_1}{h}+\frac{V^2}{2g}=z_2+\frac{p_2}{r}+\frac{V_2^2}{2g}+h_2=H$

$90+0+0=10+0+\frac{v_2^2}{2g}+h_2$

$80=\frac{v_2^2}{2g}+h_2$

$h_L=f_i\frac{V_1^2}{2g}+f_1\frac{l_1}{D_1}\frac{k_2^2}{2g}+f_b\frac{v_1^2}{2g}+f_a\frac{V_2^2}{2g}+f_2\frac{l_2}{D_2}\frac{V_2^2}{2g}$

$80=\frac{V_2^2}{2y}(1+f_2(\frac{b_2}{D_1}{)}^4+f_1\frac{l_1}{D_1}(\frac{D_2}{D_1}{)}^4+f_0(\frac{D_2}{D_1}{)}^4+f_{cc}+f_2\frac{l_2}{D_2})$

$f_1,f_2=f=\frac{124,6*n^2}{D_1^3}$ o$|$N$,$