※ 引述《susiseptem (..)》之銘言:
: http://imgur.com/a/djQTh
: 圖二
: 感謝各位前輩!!
圓O半徑r
(r - 6)^2 = 14^2 - 2^2 + (r - 10)^2
=> -12r + 36 = 192 - 20r + 100
=> 8r = 256
=> r = 32
AB = 2√[32^2 - 16^2]
= 2√768
= 32√3
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