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EB/4=3/5(lalu dikalikan silang)
5EB=4×3
EB=12/5
EB=2,4cm
BC=EB+EC
=2,4+4
=6,4cm
AB
6/AB=5/3(lalu dikalikan silang)
6×3=AB×5
18=5AB
AB=18/5
AB=3,6cm