Tolongg iyyaaa.....yangg tauu ajaa

1.
BE bersesuaian CD=BE/CD=6/10,5
AB bersesuaian AC=AB/AC=AB/AB+BC=16/16+BC
Jadi,
BE/CD=AB/AC
BE/CD=AB/AB+BC
6/10,5=16/16+BC
6(16+BC)=10,5×16
96+6BC=168
6BC=168-96
6BC=72
BC=12 cm

Jawaban:
A.12 cm

2.
7/12=14/14+k
7(14+k)=12×14
98+7k=168
7k=168-98
7k=70
k=10 cm

Jawaban:
B.10 cm

Semoga bisa membantu...

1.
BE/CD = AB/(AB+BC)
6/10,5= 16/(16+BC)
16+BC= 10,5X16/6
16+BC=168/6
BC=28-16
BC= 12 cm

maaf klo salah