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The measure of b is __

The measure of b is __-example-1

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Answer:


{29}^(2) = {20}^(2) + {b }^(2) \\ 841 = 400 + {b}^(2) \\ 841 - 400 = {b}^(2) \\ 441 = {b}^(2) \\ √(441) = b \\ 21 = b

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