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<p>1. AD = 10 cm</p><p>&nbsp; &nbsp; &nbsp;CD = 17 cm</p><p>&nbsp; &nbsp; &nbsp;BD = 16 cm</p><p>&nbsp; &nbsp; &nbsp;a. Panjang DO</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; DO = BD : 2&nbsp;</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 16 : 2</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 8 cm</p><p>&nbsp;</p><p>&nbsp; &nbsp; &nbsp;b. Panjang AO</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; AO = √(AD² - DO²)</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= √(10² - 8²)</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= √(100 - 64)</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= √36</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 6 cm</p><p>&nbsp;</p><p>&nbsp; &nbsp; &nbsp; &nbsp; c. Panjang OC</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;OC = √(CD² - DO²)</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = √(17² - 8²)</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = √(289 - 64)</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = √225</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 15 cm</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;d. Luas ABCD</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;L = (AC x BD)/2</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= ((AO + OC) x BD)/2</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= ((6 + 15) x 16)/2</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= (21 x 16)/2</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 168 cm²</p><p>&nbsp;</p><p>2. e. Panjang PO</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; PO = √(PS² - OS²)</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= √(15² - 9²)</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= √(225 - 81)</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= √144</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 12 cm</p><p>&nbsp; &nbsp;</p><p>&nbsp; &nbsp; f. Panjang TQ&nbsp;</p><p>&nbsp; &nbsp; &nbsp; &nbsp; TQ = PO = 12 cm</p><p>&nbsp;</p><p>&nbsp; &nbsp; g. &nbsp;Panjang RS</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; RS = OT = 50 cm</p><p>&nbsp; &nbsp;&nbsp;</p><p>&nbsp; h. Luas Trapesium PQRS</p><p>&nbsp; &nbsp; &nbsp; &nbsp;L = ((RS + PQ) x OS)/2</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = ((50 + 74) x 9)/2</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= (124 x 9)/2</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 558 cm²</p>