Verified answer

Resposta:

AT = 472cm³; V = 672cm³.

Explicação passo a passo:

AT = 2(ab + ac + bc).

AT = 2(12 x 8 + 12 x 7 + 8 x 7)

AT = 2(96 + 84 + 56)

AT = 2(180 + 56)

AT = 2 x 236

AT = 472.

V = abc

V = 12 x 8 x 7

V = 672.