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<p>Jawaban yang tepat adalah</p><ul><li>Faktor skala &nbsp;= 3 : 2</li><li>Nilai x = 6 cm dan nilai y = 7,5 cm</li></ul><p>&nbsp;</p><p>Pembahasan :</p><p>a. Faktor skala dari segi banyak ABCDE terhadap segi banyak RSTUV</p><p>&nbsp; &nbsp; &nbsp;AE : RV = 9 : 6</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 3 : 2</p><p>&nbsp; &nbsp; &nbsp;Faktor skalanya adalah 3 : 2</p><p>&nbsp;</p><p>b. Mencari nilai x dan y</p><p>&nbsp; &nbsp; &nbsp;RV/AE = RS/AB</p><p>&nbsp; &nbsp; &nbsp;6/9 = 4/x</p><p>&nbsp; &nbsp; &nbsp;2/3 = 4/x</p><p>&nbsp; &nbsp; &nbsp;x = (4 . 3)/2</p><p>&nbsp; &nbsp; &nbsp; &nbsp;= 12/2</p><p>&nbsp; &nbsp; &nbsp; &nbsp;= 6 cm</p><p>&nbsp; &nbsp; &nbsp;Nilai x = 6 cm</p><p>&nbsp; &nbsp;</p><p>&nbsp; &nbsp; &nbsp;RV/AE = TU/CD</p><p>&nbsp; &nbsp; &nbsp;6/9 = &nbsp;5/y</p><p>&nbsp; &nbsp; &nbsp;2/3 = 5/y</p><p>&nbsp; &nbsp; &nbsp;y = (3 . 5)/2</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 15/2</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= &nbsp;7,5 cm</p>