A $74$ cm square gate has its top edge $10$ m below the water surface. It is on a $45$ angle and its bottom edge is hinged as shown in Fig. below., use water $=9\mathrm{.}81$ KN$/$m$31-$ The force $($P$)$ needed to open the gate is $----------$

$16\mathrm{.}63$KN

$21\mathrm{.}43$KN

$57\mathrm{.}63$KN

$33\mathrm{.}17$KN

$49\mathrm{.}83$KN

The location of the excerted force from the surface of the water is $?$

$24\mathrm{.}87$m

$12\mathrm{.}26$m

$16\mathrm{.}71$m

$14\mathrm{.}87$m

$20$m