Question

Tolong ya dijawab serta caranya.soalnya bsk mau dikumpul

Answer 1

21. 35° + (2x+3)° + (x+16)° = 180°
35+3+16+3x = 180
54+3x = 180
3x = 126
x = 42°

22. K:L:M = 5:7:3
L = 7/15 x 180
L = 84°

23. sudut RPQ = PQR = QRP = 180÷3 = 60°
sudut PRS = 180-60 = 120°
sudut PSR = RPS = (180-120)÷2 = 30°

24. sudut K = 180-68 = 112°
112+(2x-5)+(x+1) = 180
108+3x = 180
3x = 72
x = 24

25. sudut QPS= PSQ = (180-40) ÷ 2 = 70°
sudut RSP = 180-70 = 110
sudut SRP = SPR = (180-110)÷2 = 35°
sudut QPR = RPS+SPQ = 35+70 = 105°

27. D:E:F = 3:7:5
D = 3/15 x 180
D = 36° (jawabannya)
D = 5x-24 = 36
5x = 60
x = 12

28. sudut L = M = 180-112 = 68
sudut K = 180-68-68 = 44°