dik: keliling segitiga ABC =63cm Dit: panjang sisi AB = ...Cm

3a+2a+2a = 63
7a = 63
a = 63/7
a = 9

AB = 3a
= 3(9)
= 27

       K=2a+3a+2a
63cm=7a
       a=63cm/7
       a=9cm

AB=3a
     =3(9)
     =27cm

jawabnya C