tolong dijawab no.29-33 yg dilingkari

29. besar sudut lingkaran = 360°
AOB + BOC + COE + AOE = 360
90 + x + 90 + 5x = 360
6x = 180
x = 30
besar AOC = x + 90 = 30 + 90 = 120°

33. A3 + B4 + C2 = 120 + (180-120) + (180-120)
= 120 + 60 + 60 = 240°

32. 4x - 4 + 2x + 7 = 180
6x + 3 = 180
6x = 177
x = 29,5

besar CBD = 2x + 7
= 2(29,5) + 7
66°

30. 40 + 5x + 3x = 180
40 + 8x = 180
8x = 140
x = 17,5

besar ABD = 40 + 5x
=40 + 5(17,5)
= 127.5

maaf ya kalau salah