A gravity retaining wall is shown in the figure below. Calculate the factor of safety with respect to overturning and sliding, given the following data:

Wall dimensions: $H=6m,x_1=0\mathrm{.}6m,x_2=2m,x_3=2m,$

$x_4=0\mathrm{.}5m,x_5=0\mathrm{.}75m,x_6=0\mathrm{.}8m,D=1\mathrm{.}5m$

Soil properties:

${}_1=16\mathrm{.}5k\frac{N}{m^3},{}_1^{\text{'}}=32,{}_2=18k\frac{N}{m^3}$

${}_n^{\text{'}}=22,n=40k\frac{N}{m^2}$

Use Coulomb's active earth pressure in your calculation and let ${}^{\text{'}}=\frac{2}{3}{}_1^{\text{'}}.$ Use ${}_{\text{c}\text{o}\text{n}\text{c}\text{r}\text{e}\text{t}\text{e}}=23\mathrm{.}58k\frac{N}{m^3}.$ Also, use $k_1=k_2=\frac{2}{3}$ and $P_p=0$ in equation

$F{S}_{(sliding)}=\frac{({\displaystyle \underset{?}{\overset{?}{}}}V)tan(k_1{}_2^{\text{'}})+B{k}_2{c}_2^{\text{'}}+P_p}{P_{a}cos}$

For ${}_1^{\text{'}}=32,=0,=71\mathrm{.}57,K_a=0\mathrm{.}45,{}^{\text{'}}=21\mathrm{.}33.$

$($Enter your answers to three significant figures.$)$

$F{S}_{(overturning)}=$

$F{S}_{(sliding)}=$