Tolong jwb pertanyaan ini​

1.V = pxLxt

= 20x15x18 = 5.400 cm

jadi volumenya:5.400 cm³

2.V = 32×2 + (18×2)

= 64 + 36

= 100 cm³

4.V = s x s x s

= 15 x 15 x 15

= 3.375 cm³

5.volume balok = p x l x t

= 15 x 25 x 8

= 3. 000 cm³

7. Volume prisma = luas alas × tinggi prisma

= (½ × alas × tinggi) × 32 cm

= (½ × 21 cm × 28 cm) × 32 cm

= (21 cm × 14 cm) × 32 cm

= 9.408 cm³

8.V = π x r² x t

V = 22/7 × 28 × 28 × 20

V = 22/7 × 15680

V = 344960/7

V = 49280 cm³

10. r = 28/2 = 14 cm

V = 4/3 × π r³

V = 4/3 × 22/7 × 14 × 14 × 14

V = 4/3 × 22 × 2 × 14 × 14

V = 11.498,66 cm³