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AB=6.16/12
=8
QR/4=12/6
QR=12.4/6
=8
panjang DC + BC - AD = 6 + 6 - 4 = 12- 4 = 8
2.Panjang QR = 4 karena dari ;
Panjang PQ - SR = 16 - 12 = 4