Tolong Jawab Yang Nomor 8&9.Pake caranya!No Asal!.

8.
Luas Permukaan Prisma :
L = 2 × ½ × 9 × 12 + 11 × 12 + 11 × 15 + 11 × 9
L = 9 × 12 + 132 + 165 + 99
L = 108 + 132 + 264
L = 504 cm²

9.
Volume Kubus :
V = r³
V = 14³
V = 2.744 cm³

Volume Tabung :
V = πr²t
V = 22/7 × 7 × 7 × 8
V = 22 × 7 × 8
V = 154 × 8
V = 1.232 cm³

Volume Gabungan :
V = 2.744 cm³ + 1.232 cm³
V = 3.976 cm³

Maaf Kalau Salah