tlong bantu soal soalyg di gambar

3. A. CB=RQ
AB=PQ
CA=RP

B. panjang AC
AC/PR= AB/PQ
> AC/4 = 15/5
> 5 x AC= 15 x 4
> 5 x AC= 60
> AC= 60/5
AC= 12
maaf kalau salah