Pakai cara yaaa Yg jwb duluan jawaban tercerdas

1) LP = p × l = 18 × 9 = 162 cm²
Ls = ½ × a × t = ½ × 9 × (25 - 18) = ½ × 9 × 7 = ½ × 63 = 21,5 cm²
Lttl = LP + Ls = 162 + 21,5 = 183,5 cm²

2) Lt = ½ × (a + b) × t
360 = ½ × (a + b) × 15
360 ÷ ½ = 15 × (a + b)
720 = 15 × (a + b)
a + b = 720 ÷ 15
a + b = 41,3 cm

3) L = ½ × d1 × d2
= ½ × 28 × 48
= 672 cm²

4) Lt = ½ × (a + b) × t
560 = ½ × (18 + 22) × t
560 = ½ × 40 × t
560 = 20 × t
t = 560 ÷ 20 = 28 cm