Tolong nomor 1 dan 4 ya
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kali silang
8 × 18 = 12 × w
144 = 12w
w = 144/12 = 12
4. maka dapat dipastikan segitiga DBC dan EAC sebangun
CD/BC = 8/2 = 4
AB = 3 × 4 = 12
DE = 12
DB/EA = CD/CE
DB/15 = 8/20
kali silang
20DB = 120
BD = 120/20 = 6
kali silang
8 × 18 = 12 × w
144 = 12w
w = 144/12 = 12
4. maka dapat dipastikan segitiga DBC dan EAC sebangun
CD/BC = 8/2 = 4
AB = 3 × 4 = 12
DE = 12
DB/EA = CD/CE
DB/15 = 8/20
kali silang
20DB = 120
BD = 120/20 = 6