A large tank has a circular$-$shape$-$edged orifice of $930m{m}^2$ in area at a depth of $2\mathrm{.}7m$ below constant water level. The jet issues horizontally and at a horizontal distance of $2\mathrm{.}34m$ it falls $0\mathrm{.}54m.$ The measured discharge is $4\mathrm{.}2\frac{L}{s}.$ Calculate the coefficients of velocity, $C_v,$ contraction, $C_c$ and discharge, $C_d.$