Respuesta :

hbj

Answer:

36

Step-by-step explanation:

a² + b² = c²

a² + 77² = 85²

a² + 5929 = 7225

a² = 1296

a = 36

FaDaReAdEoLa

Step-by-step explanation:

[tex] \sqrt{ {85}^{2} - {77}^{2} } [/tex]

[tex] \sqrt{1296} [/tex]

[tex] 36 [/tex]

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