A vertical triangular gate with base width of $500$mm and an altitude of $1200$mm is submerged in water, with its vertex at the water surface and lower base horizontal.

$19.$ Compute the total force acting on one side of the gate, in kN$.$

a$.2\mathrm{.}35$

b$.2\mathrm{.}45$

C$.2\mathrm{.}68$

d$.2\mathrm{.}97$

$20.$ Compute the distance from the center of gravity to the center of pressure, in meters.

a$\mathrm{.}0\mathrm{.}05$

b$.0\mathrm{.}10$

C$.0\mathrm{.}15$

d$.0\mathrm{.}20$

$21.$ Compute the distance from the water surface to the center of pressure in meters.

a$.0\mathrm{.}85$

b$.0\mathrm{.}90$

c$.0\mathrm{.}95$

d$.1\mathrm{.}00$