Jawabanmu

2014-02-17T17:42:34+07:00
Besar sudut ROS =
luas juring OPQ/luas juring ORS = besar sudut OPQ/besar sudut ORS 
19,25 cm2/51,33 cm2 = 45'/?
51,33 cm2 kali 45 = 19,25?
2309,85 = 19,25?
? = 2309,85 : 19,25
?=199,99'
10 3 10
2014-02-17T17:43:05+07:00
19,25/45° = 51,33/x (dikali silang)
2309,85 = 19,25x
x = 119,9°

Semoga Membantu^^
7 3 7