help resolving this Fluid Mechanic problem step by step. Thank you so much.

In Fig. P$3\mathrm{.}131$ both fluids are at $20C.$ If $V1=1\mathrm{.}7f\frac{t}{s}$ and losses are neglected, what should the

manometer reading $hft$ be$?$ Point#$2$ has diameter of $1$ inch if it is not readable.

Note: The special weight of mercury is equal to $846$ psf and for water is equal to $62\mathrm{.}4$ psf$.$ To find the V$2,$ try

to use continuity equation as follows: