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2014-04-23T14:52:14+07:00
Perbandingan PR:QS=2:3, ->2x:3x, L=d1.d1/2, 27=2x.3x/2, 27=3x^2, x^2=9, x=3. Panjang PR=2x=2.3=6cm, PQ=3x=3.3=9cm.
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