Calculate the arithmetic and volume mean diameter DN for the $-4$ to $+200$

mesh fractions of the material $($quartz$)$ analysed in Table below. Take a $=2,$

$$s $=0\mathrm{.}571$ and density $=2650$ kg$/$m$3$ for crushed quartz particles.Calculate the arithmetic and volume mean diameter $D_N$ for the $-4$ to $+200$

mesh fractions of the material $($quartz$)$ analysed in Table below. Take $a=2,$

${}_s=0\mathrm{.}571$ and density $=2650k\frac{g}{m^3}$ for crushed quartz particles.