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Calculate the no$.$ of kgs$.$ of rebar $($#$3)$ for a square footing $1500mm1500mm$ with the following additional given below:

Concrete cover $=30mm($both sides$)$

Rebar bend Length $=100mm$

#$3$ rebar $=0\mathrm{.}561k\frac{g}{m}$

A concrete wall is to built with dimension of $10m$ by $3\mathrm{.}5m$

a$.$ Compute for the total no$.$ of kgs$.$ #$4$ rebars given the following given below:

Vertical bar spacing is $0\mathrm{.}15cm$ O$.$C$.$

Horizontal bar $0\mathrm{.}20cm$ O$.$C$.$

#$12$mm rebars $=0\mathrm{.}890k\frac{g}{m}$

$,$#$12mm$ rebar unit price $=P\frac{44}{k}g$

Density of steel $=7850k\frac{g}{m^3}$

b$.$ Calculate for the total price of #$12mm$ rebar.