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Verified answer
Bab Bangun DatarMatematika SMP Kelas VII
a] RS / BC = QR / CD
RS / 3 = 30 / 12
RS = 3 x 30/12
RS = 7,5 cm
b] PS = QR = 30 cm
c] PQ = RS = 7,5 cm
d] AB = CD = 12 cm
e] AD = BC = 3 cm
CB /RQ = 3/30 = 1/10
CD/RS = 1/10
RS = 10 CD = 12 × 10 = 120
PS = QR = 30
PQ = RS = 120
AD = BC = 3