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slega [8]
3 years ago
12

(multiple choice) plz help me!!

Mathematics
1 answer:
harkovskaia [24]3 years ago
7 0

8 \sqrt{5} is \: the \: length

Step-by-step explanation:

( {16})^{2}  = ( {x})^{2}  - ( {8})^{2}  \\ 256 =  {x}^{2}  - 64 \\ 256 + 64 =  {x}^{2}  \\    \sqrt{320}  =  \sqrt{ {x}^{2} }  \\ 8 \sqrt{5}  = x

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