Question $3$: Open Manometer

Liquids A$,$ B$,$ C in the container shown in the figure have relative densities of $1\mathrm{.}0,1\mathrm{.}2$ and $1\mathrm{.}3$

respectively. The liquid surface is at the elevation shown:

a$)$ What is the intensity of pressure in kPa at the bottom of the tank?

b$)$ At what elevation will the liquid stand in each piezometer tubes?

c$)$ What will be the deflection $\text{'}h\text{'}$ of the mercury at point $B$ on the manometer shown? On

the surface at $A,$ there is an atmospheric pressure.