NEED HELP ASAP ALGEBRA 2
Find the third side in simplest radical form

Answer:
36
Step-by-step explanation:
a² + b² = c²
a² + 77² = 85²
a² + 5929 = 7225
a² = 1296
a = 36
Step-by-step explanation:
[tex] \sqrt{ {85}^{2} - {77}^{2} } [/tex]
[tex] \sqrt{1296} [/tex]
[tex] 36 [/tex]