tolong bantu jawab yaa.. mks..

L KOI = 2LKMI
3x + 100 = 2. 4x
3x + 100 = 8x
3x - 8x = -100
-5x = -100
x = 20

jawab
Lingkaran

1) sdut pusat = 2 x sudut keliling
3x + 100 = 2(4x)
3x - 8x  = -100
-5x =- 100
x = 20
<KML = 4x = 4(20) = 80

2. sudut keliling sama besar jika menghadap busur yang sama
p = <ADB =<ACB= 30
q = <CBD = <CAD = 45