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07-01-2021
Mathematics

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Please helpppppp !!!!!!!!!!!!!! Will mark Brianliest correct answer !!!!!!!!

Please helpppppp Will mark Brianliest correct answer class=

Respuesta :

07-01-2021

Answer:

21

Step-by-step explanation:

a^2 + b^2 = c^2

20^2 + b^2 = 29^2

400 + b^2 = 841

b^2 = 441

21 = b

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