h_{1} + h_{2} = a, h_{2} = \frac{ρ_{1} a}{ρ_{1} + ρ_{2}} = 0, 16 m

${h_1+h_2=a, \quad h_2={\rho_1 a \over \rho_1+\rho_2 } = {0,16}\,\mathrm{m}}$

Error