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.
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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.