Tolong bantu jawab no.13, pakai cara ya

[tex]volume \: balok = 26 \times 6 \times 12 = 1872 {cm}^{3} \\ volume \: kubus = 6 \times 6 \times 6 \: \: \: \:= \: 216 {cm}^{3} \\ 1872 - 216 = 1656 {cm}^{3} [/tex]
Semoga membantu ya...