Tolong no 1 dan 2 dikumpul besok!!

AD = 12-4 = 8 cm
AE = 6 x 8/4 = 12 cm
10/BC = 8/12
BC = 120/8 = 15 cm

p = 30x20/15 = 40
q = 30x12/15 = 24
r = 60x20/(20+15) = 1.200/35 = 34,3
s = 60x27/15 = 108