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A point X  lies in the interior of rectangle ABCD . If AX=11 cm, BX=9 cm and CX=10 cm, what is DX ? Express your answer in simplest radical.

 

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<3

 Jul 25, 2022
 #2
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By the British Flag theorem,

 

DX^2 + 81 = 121 + 100

DX^2 = 140

 

DX = sqrt(140) = 2sqrt(35)

 Jul 26, 2022

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