yg baek caranya gimana

luas trapesium = jumlah sisi sejajr x tinggi : 2
= (4 + 9) x T :2 = 13T/2

2 X LUAS TRAPESIUM = 2x 13T/2 = 52
13T = 52
T = 52/13 = 4

luas persegi = panjang x lebar
= 9 x 2T
= 9 x 2(4) = 9 x 8 = 72 cm²