$(10)$ Determine the weight per Unit length of the beam made from steel. The specific weight is $70k\frac{N}{m^s}.$Please solve for the weight per unit length

$0\mathrm{.}1mW=70k\frac{N}{m^3}[2(0\mathrm{.}4m)(0\mathrm{.}1m)+(0\mathrm{.}1m)(0\mathrm{.}4mm)]$

$N=70k\frac{N}{m^3}[0\mathrm{.}08m^2+0\mathrm{.}06m^2]$

$w=70k\frac{N}{m^z}[0\mathrm{.}14m^2]$

$0\mathrm{.}1m,w=9\mathrm{.}3k\frac{N}{m}$