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keliling "--' 2 = 21,98 cm
""""""""---""""""" 3 = 27,475 cm
semoga membantu
k1 = 2 x 22/7 x 3,5 = 2 x 11 = 22 cm
k2 = 2 x 22/7 x 7 = 2 x 22 = 44 cm
k3 = 2 x 22/7 x 8,75 = 2 x 27,5 = 55
kalo rasio k1 : k2 : k3 = 2 : 4 : 5 (pake perbandingan 1=11)
kalo mau cr rasio liasnya,kt cari dl luasnya :
L1 =9,6 cm2
L2 = 38,5 cm2
L3 = 60,1 cm2
jadi, kalo rasionya L1 : L2 : L3 = 1 : 4 : 6 (pake prbandingaan 1=9,6)