Calculation: Mc90mX - 1

h1

/ h2

=

ρ2

/ ρ1

h1

/ h2

=

ρ2

/ ρ1

$$\frac{h1}{h2}$$ = $$\frac{\rho2}{\rho1}$$

h1 =

ρ2* h2

/ ρ1

$$h1$$ = $$\frac{\rho2\cdot h2}{\rho1}$$

h1 =

h2* ρ2

/ ρ1

$$h1$$ = $$\frac{h2\cdot \rho2}{\rho1}$$