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<p>Jawaban :</p><p>PQ = 8 cm</p><p>PS = 6 cm</p><p>AB = &nbsp;4 cm</p><p>&nbsp;</p><p>1. AD/PS = AB/PQ</p><p>&nbsp; &nbsp; AD/6 = 4/8</p><p>&nbsp; &nbsp; AD/6 = 1/2</p><p>&nbsp; &nbsp; AD = 6/2&nbsp;</p><p>&nbsp; &nbsp; AD =<strong> 3 cm</strong></p><p>&nbsp;</p><p>2. Mencari panjang AC</p><p>&nbsp; &nbsp; &nbsp;Mencari panjang AC kita bisa gunakan Pythagoras</p><p>&nbsp; &nbsp; &nbsp;AC = √(AB² + BC²)</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= √(4² + 3²)</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= √(16 + 9)</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= √25</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;=<strong> 5 cm</strong></p><p>3. Luas PQRS dan Luas ABCD</p><p>&nbsp; &nbsp; &nbsp;L. PQRS = PQ x PS</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 8 x 6</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; =<strong> 48 cm²</strong></p><p>&nbsp;</p><p>&nbsp; &nbsp; &nbsp;L. ABCD = AB x AD</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 4 x 3</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = <strong>12 cm² &nbsp;&nbsp;</strong> &nbsp; &nbsp; &nbsp; &nbsp;</p><p>&nbsp;</p>