Mohon di jawab dengan benar....

4) L1 = ½ × d1 × d2
= ½ × 18 × (12 × 2)
= 9 × 24
= 216 cm²
L2 = ½ × (a + b) × t
= ½ × (15 + 24) × 12
= ½ × 39 × 12
= 234 cm²
Lttl = 216 + 234 = 450 cm²

5)ta = √13² - 5²
= √169 - 25
= √144
= 12 cm
V = La × t
= ½ × a × ta × tp
= ½ × 5 × 12 × 7
= 210 cm³