Tolong bantuin pliss

L = ( a + b/2 × T) + ( a × t/2)

= ( 20 + 30/2 × 4 ) + ( 30 × 8/2)

= ( 50/2 × 4) + (240/2)

= (200/2) + 120

= 100 + 120

= 220 cm²

semoga membantu