Tolong di jawab pakai cara kk!!

1.
[tex]LP 1= 2((p \times l) + (p \times t) + (l \times t)) \\ LP1 = 2((18 \times 5) + (18 \times 6) + (6 \times 5)) \\ LP1 = 2(90 + 108 + 30) \\ LP1 = 2(228) \\ LP1 = 456 \\ \\ LP2 = (p \times l) + 2((p \times t) + (l \times t)) \\ LP2 = (12 \times 5) + 2((12 \times 5) + (5 \times 5)) \\ LP2 = 60 + 2(60 + 25) \\ LP2 = 60 + 2(85) \\ LP2 = 60 + 170 \\ LP2 = 230 \\ \\ LP = 230 + 456 \\ LP = 686 \\ \\ V = (18 \times 5 \times 6) + (12 \times 5 \times 5) \\ V = (540 + 300) \\ V = 840[/tex]
2.
[tex]a. \: LP \: balok= 6 \times s \times s \\ \: LP \: balok = 6 \times 8 \times 8 \\ \: LP \: balok = 384 \\ b. \: V \: balok = 8 \times 8 \times 8 \\ \: V \: balok = 512 \\ c. \: Luas \: Alas \: limas = 8 \times 8 \\ \: Luas \: Alas \: Limas = 64 \\ d. \: Panjang \: Diagonal \: Limas =8 \sqrt{3} \: (gk \: tau \: maksudnya \: apa \: soalnya \: panjang \: diagonal \: ini \: di \: perseginya) \\ e. \: Volume \: Limas = \frac{1}{3} \times (8 \times 8) \times (4 \sqrt{2} )\\ \: Volume \: Limas = \frac{1}{3} \times 64 \times 4 \sqrt{2} \\ \: Volume \: Limas = \frac{256}{3} \sqrt{2} [/tex]

Maaf kalo salah, semoga membantu