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Please help me!!!!..
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Please help me!!!!..

Please help me!!!!..-example-1
User Sigrlami
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1 Answer

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The answer is B. 20^2 - 12^2 = a^2, as you would use a^2 + b^2 = c^2 and use 20 for c and 12 for b. Then you would subtract b from each side to isolate a, ending up with 20^2 - 12^2 = a^2.
User Arwed Mett
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