Tolong pakai cara y No 30 saja

Volume = Volume Balok + Volume Prisma Segitiga

Volume Balok
= p × l × t
= 10 cm × 8 cm × 18 cm
= 1440 cm³

Volume Prisma Segitiga
= (Luas alas) × tinggi
= (1/2 × 18 × 9) × 10
= (9×9) × 10
= 81 × 10
= 810 cm³

Volume
= 1440 + 810
= 2.250 cm³