pake caranya dong guys

Diket = PS = 35 cm
              RQ = 15 cm
              PO = 60 cm
Dit = ST
Jawab = RQ : PS
                15 cm : 35 cm
                 3 : 7
                ST = [tex] \frac{7}{10} [/tex] x 60 cm
                         42 cm²

klo gk salah ky gitu
Semoga membantu