Jawabanmu

2014-05-16T13:13:42+07:00
1600 cm2=40
40x4=160(persegi)
2x(40+32)=2x72=144(P.panjang)
160/144= 10:9 (10 banding 9)
2014-05-16T13:18:26+07:00
L persegi = sxs
1600 = sxs
v1600 = s
40=s
L persegi : L persegi panjang
sxs : 2(p+l)
40x40 : 2(40+32)
160 : 144
10 : 9