A$.1($a$)$ A circular silo tank in Fig. A$.1$ having a diameter of $1m$ is fully filled with a $6m$ unknown liquid with Specific Gravity $($S$.$G$)$ of $0\mathrm{.}959.$ Determine the Weight $(W),$ Mass $($m$),$ Density $()$ and Specific Weight $()$ of the unknown liquid.

$($b$)$ Determine the pressure at the bottom of the tank.