Jawabanmu

2014-05-23T22:50:09+07:00
Cc'
cc'² = bc² - bc'²
cc'² = 12²-(6√2)²
cc'² = 144 - 72 
cc'² = 72 
cc' = √72
cc' = 6√2

karena, cc' adalah setengah ca. CA = 12√2