jawabnya pakai caranya ...

10) b ii dan iii
11)PQ² = 50²-48² = 2500 - 2304 = 196
PQ = √196
PQ = 14
12)2x + 5x+30+x-10 = 180
8x = 180+10 - 30
8x= 160
x = 20
13)R = 180 - 90 - 20
R = 70
14) 180 - 75-50 = 55°