tolong di jawab semua ya soalnya dengan cara kerjanya

14) V = ½ × a × t × t
= ½ × 4 × 6 × 11
= 132 cm³

15) V = ¾ × π × r² × t
= ¾ × 22/7 × 14 × 14 × 20
= 9.240 cm³ ( B )

16) L1 = p × l
= 18 × 20
= 360 cm²
L2 = 2 × ½ × a × t
= 2 × ½ × 3 × 16
= 48 cm²
Lttl = 360 + 48 = 408 cm² ( D )