steel density=7850 kg/meter^3
steel rod: leng=0.8 meter, radius=0.09 meter
end area=pi*r*r=3.14159*(0.09)^2=3.14159*0.0081=0.025446879 meter^2
volume=(end area)*leng=0.025446879*0.8=0.020357503
wate=7850*0.020357503
=154.30987 kg
or 154 kg...yer lukky if size akkurut tu 3 digits