Tolong dijawab no 3,4,5 pakai caranya

3. L persegipanjang = p x l
= 16 x 6
= 96
L trapesium = (a + b) . t / 2
= (9 + 6).8/2
= 100
jadi L persegipanjang + L trapesium = 96 + 100 = 196