\"\"

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The given values are \"\".

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\"\"                                (Use pythagorean theorem)

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\"\"                           (Substitute \"\")

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\"\"                             (Evaluate powers \"\")\"\" 

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\"\"                                      (Add: \"\")

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\"\"                               (Take the square root of each side)

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\"\"                                    (Cancel square and root)  

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\"\"                                 (Use calculator)

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Length cannot be negative , so the missing length is 14.42units.\"\"

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The length is 14.42 units.