tolong jawab ya. yang bisa matematika tanya aku

1. L1 = p × l = 30 × 42 = 1260 cm2
L2 = a × t ÷ 2 = 30 × 17 ÷ 2 = 255 cm2
Luas = 1260 + 255 = 1515 cm2

2. L1 = ( a + b ) × t ÷ 2 = ( 82 + 44 ) × 19 ÷ 2 = 126 × 19 ÷ 2 = 1197 cm2
L2 = p × l = 82 × 15 = 1230 cm2
Luas = 1197 + 1230 = 2427 cm2