tolong bantu aku ya pliss

Luas :
L = (2 × ½ × a × t) + (p × l) + (½ × JSS × t)
L = (10 × 12) + (20 × 10) + (½ × (8 + 20) × 8)
L = 120 + 200 + (28 × 4)
L = 320 + 112
L = 432 cm²

Keliling :
K = 8 + 10 + 10 + 10 + 10 + 13 + 13 + 13 + 13
K = 100 cm

Maaf Kalau Salah