有兩同心圓,半徑分別為5,3,凸四邊形ABCD的頂點A是小圓:－線上遊戲排行榜2013/2014,進擊的巨人線上看,candy crush saga外掛,正妹寫真三圍

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Dec 26th 2013, 23:47

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有兩同心圓,半徑分別為5,3,凸四邊形ABCD的頂點A是小圓上的一個定點,B,C,D三頂點都在大圓上,滿足上述條件的凸四邊形ABCD面積的最大值為?...

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