In the previous figure, three squares and a triangle have areas of A， B，C，and X as shown. If A =144, B = 81 and C = 225, then X =
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数学PS
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In the previous figure, three squares and a triangle have areas of A， B，C，and X as shown. If A =144, B = 81 and C = 225, then X =
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正确答案: D