Tolong dijawab gengs,,, #BesertaCaranya

Note : DA = dimisalkan x

Jawab :
CD/CA = DE/AB
6/6+x = 9/12 (dikalikan silang)
9×(6+×) = 6×12
6+x = 6×12/9 (sederhanakan)
6+x = 2×4
6+x = 8
x = 8-6
x = 2
Jadi, DA = 2
Jadi,
CA = CD+DA
CA = 6+2
CA = b. 8 cm

Semoga bermanfaat.