COULD you please show all your work so that I may undestand how to workout the problem. $\backslash$table$[[$U$.$S$.$ sieve no$.,\backslash$table$[[$Mass of soil$],[$retained $($g$)]]],[4,0],[10,18\mathrm{.}5],[20,53\mathrm{.}2],[40,90\mathrm{.}5],[60,81\mathrm{.}8],[100,92\mathrm{.}2],[200,58\mathrm{.}5],[$Pan$,26\mathrm{.}5]]$

a$.$ Determine the percent finer than each sieve and plot a grain$-$size distribution curve.

b$.$ Determine $D_{10},D_{30},$ and $D_{60}$ from the grain$-$size distribution curve.

c$.$ Calculate the uniformity coefficient, $C_u.$

d$.$ Calculate the coefficient of gradation, $C_c$