Question

nao consigo resolver

Answer 1

$a) \: \: diagonal \: \: \: 2 \sqrt{2}$
$area \: da \: face \: 4 {m}^{2}$
$area \: total = 6 \times 4 = 24 {m}^{2}$
$volume = 8 {m}^{3}$
$b) \: \: diagonal = 7 \sqrt{2} \\ area \: da \: face = 49 {m}^{2} \\ area \: total = 6 \times 49 = 294 {m}^{2} \\ volume = {343m}^{3}$