Question

Tolong bantu kak, buat persiapan UNBK plissssss​

Answer 1

27. (5x-10)+(4x)+(180-(8x+6)) = 180

5x-10+4x+180-8x-6 = 180

9x-8x = 180-180+16

x=16

PQS = 180-(8x+6)

= 180-(8(16)+6)

= 180-(128+6)

= 180-134

= 46

28. KLM = 50 + (180-115)

= 50+65

= 115

29. Luas = luas 1/4 ling - luas segitiga

= (1/4. 3,14. 10. 10)-(1/2. 10. 10)

= 78,5 -50

= 28,5