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a.luas jajargenjang ABCD
L:a×t
:5×t
t:(AD-AE)kuadrat
:10kuadrat-6 kuadrat
:10×10-6×6
:100-36: 64 diakarkan
:8
A×T:5×8: 40 cm kuadrat
5x=90-10
5x=80
x=80\5
x=16
sudut AOB=16×2
=32
maaf ya saya hanya tahu nomor 33