$4\mathrm{.}17$ If the wall in Fig. P$4.17$ is $4$ m long, calculate the total

force on the wall due to the oil pressure. Also determine

the location of the center of pressure and show the resul$-$

tant force on the wall.

FIGURE P$4\mathrm{.}17$ Angled wall for Problem $4\mathrm{.}17.$