toolong ya pake caranya!! 1) luas bgn datar 2)luas bgn gabungan

1 ) L.trapesium = 1/2 x jmlh sisi sejajar x tinggi = 1/2 x (25+15) x 9 = 1/2 x 40 x 9 = 180 cm kuadrat
2) L.jajargenjang = alas x tinggi = 16 x 9 = 144 cm kuadrat
L.persegipnjang = pnjng x lebar = 16 x 11 = 176 cm kuadrat
L.TOTAL = L1 + L2 = 144 + 176 = 320 cm kuadrat