Problem A$.$ The tank with various fluid are shown. The

depths of the oil and water in the tank are $0\mathrm{.}6$ m and

$0\mathrm{.}5$ m $,$ respectively. Take ${}_{\text{o}\text{i}\text{l}}=900k\frac{g}{m^3},{}_{\text{w}\text{a}\text{t}\text{e}\text{r}}=$

$1000k\frac{g}{m^3},$ and ${}_{Hg}=13550k\frac{g}{m^3}.(1)$ Determine the

pressure at point $B.(2)$ Determine the pressure at

point $C.(3)$ Determine the height $h$ of the mercury in

the tube if the level of water in the tube is $h^{\text{'}}=0\mathrm{.}3m.$

$(4)$ Determine the required pressure at point $A$ if the

level of point $D$ is the same as point $A.$

Figure for Problem A