Respostas

  • Usuário do Brainly
2014-07-14T19:55:37-03:00
V=4πr²/3 +πr².20

d=8
d/2=r
r=4

V=4.3.4³/3 + 3.4².20
V=4².4² +60.4²
V=4²(1+60)
V=16.61
V=973 cm³

P/T = Pf/T
1./21+273 = Pf / 273
Pf=273/21+273
Pf=0,928 atm