Answer-
[tex]\boxed{\boxed{\text{Mass}=10.0447256\ ton}}[/tex]
Solution-
The dimensions of the cuboid is, 80×80×140 cm
So, its volume will be [tex]=80\times80\times140=896000[/tex]cm³
The dimensions of the cylinder is, radius = 40cm, height = 70cm
So, its volume will be [tex]\pi r^2h=\pi\times40^2\times70=351792[/tex]cm³
Total volume,
[tex]V=V_{\text{Cylinder}}+V_{\text{Cuboid}}\\\\=351792+896000\\\\=1247792\ cm^3[/tex]
As we know,
[tex]\Rightarrow \text{Density}=\dfrac{\text{Mass}}{\text{Volume}}[/tex]
[tex]\Rightarrow \text{Mass}=\text{Density}\times \text{Volume}[/tex]
[tex]\Rightarrow \text{Mass}=8.05\times 1247792=10044725.6\ g[/tex]
[tex]\Rightarrow \text{Mass}=10044725.6\times 10^{-6}=10.0447256\ ton[/tex]
