Tolobg dibantu no 12, 13, 14 dengan cara lengkapnya
mariati7
12) Luas juring AOB/Luas juring BOC = AOB/BOC = 18 cm²/luas juring BOC = 90°/120° = 18 X 120 = 90 X Luas Juring BOC ( kali silang) = 2160 = 90 X Luas juring BOC = 90° X Luas juring BOC = 2160 = Luas juring BOC = 2160/90 = 24 (jawaban C)
= 18 cm²/luas juring BOC = 90°/120°
= 18 X 120 = 90 X Luas Juring BOC ( kali silang)
= 2160 = 90 X Luas juring BOC
= 90° X Luas juring BOC = 2160
= Luas juring BOC = 2160/90
= 24 (jawaban C)
13) P.Busur KL/P.busur MN = KPL/MPN
= 30/MN = 45/75
= 30 X 75 = 45 X P.busur MN (kali silang)
= 2250 = 45 X P.busur MN
= P.busur MN = 2250/45
= 50 (jawaban D)