Respostas

  • Usuário do Brainly
2014-09-03T15:14:19-03:00
Al = 4a²
Al = 4 . (12)²
Al = 4 . 144
Al = 576cm²

At= 6a²
At = 6 . (12)²
At = 6 . 144
At = 864cm²

V = a³
V = (12)³
V = 1728cm³