Respuesta :

Answer:

Step-by-step explanation:

volume of cuboid=πr²h=π×40²×70=112,000 πcm³

=112,000×22/7

=352,00cm³

volume of cube=80×80×140=896,000 cm³

total volume=352,000+896,000=1248,000 cm³

Total mass=1248,000×8.05 gms=10046.400 kg