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Read question in picture
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Read question in picture

Read question in picture-example-1
User Tobifasc
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1 Answer

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Answer:


{w}^(2) = {20}^(2) - {12}^(2) = 400 - 144 = 256 \\ w = √(256) \\ \boxed{w = 16}

16 is the right answer.

User Outmind
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