Respuesta :

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Answer:

288mm^2

Step-by-step explanation:

Formula: A=2(wl+hl+hw)

Answer: 2·(14·6+3·6+3·14)

2 • (84 + 3•6 + 3•14)

2 • (84 + 18 + 3•14)

2 • (84 + 18 + 42)

2 • 144 =

288mm^2

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