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phytagoras sudut miring 5,maka tinggi = root(5^2-3^2)=root(25-9) =root(16)=4
maka tinggi trapesium = 4
Luas = 1/2 .jumlah sisi sejajar.tinggi
luas = 1/2.(9+6).4
luas = 1/2(15)(4)
luas = 30