Jawabanmu

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2014-08-29T13:58:19+07:00
Rasio 4:9
9÷4= 2,25

10×2,25= 22,5
16×2,25= 36
18×2,25= 40,5

22,5+36+40,5= 58.5+40,5=99cm
2 5 2