oblicz gestosc cieczy d=? ph=0.3hPa h=1.2m. Prosze o pomoc pilne

[latex]dane:\p_{h} = 0,3 hPa = 0,3cdot100 Pa = 30 Pa = 30frac{N}{m^{2}}\h = 1,2 m\g = 10frac{m}{s^{2}} = 10frac{N}{kg}\szukane:\d = ?[/latex] [latex]p_{h} = dcdot gcdot h /:gh\\d = frac{p_{h}}{gcdot h}=frac{30frac{N}{m^{2}}}{10frac{N}{kg}cdot 1,2m}\\d = 2,5 frac{kg}{m^{3}}[/latex]