Pressure (symbol: p or P) is the force applied perpendicular to the surface of an object per unit area over which that force is distributed.Force acts perpendicular on a surface's area . Presure Force is denote as F_A measured in Newton N calculated by

${\displaystyle F_{A}={\frac {F}{A}}}$

With

${\displaystyle F_{A}}$ . Pressure Force

${\displaystyle A}$ . Area of the surface