An oil is flowing between tank A from a cast iron pipe with a diameter of $15$ cm and a length of $150$ m to a point B$,$ at an elevation of $30$ m$.$ What pressure do we have inside tank A$,$ so that $13$ l$/$ yes Yoli $=0\mathrm{.}84$ T$/$m$3$ and kinematic viscosity $=2\mathrm{.}1*10-6$ m$2/$sDip$$sit A tancat