Question

me ajudem pfv ....................................................................

Answer 1

Resposta:

222cm²

Explicação passo-a-passo:

$at = 2(ab + ac + bc) \\ at = 2(12 \times 5 + 12 \times 3 + 5 \times 3) \\ at = 2(60 + 36 + 15) \\ at = 2 \times 111 \\ at = 222$