Respuesta :

r3t40
Pythagoras theorem
[tex] {a}^{2} = {b}^{2} + {c}^{2} [/tex]
In your case
[tex] {c}^{2} = {9}^{2} + {10}^{2} [/tex]
Which is
[tex] \sqrt{c} [/tex]
Approximated result 13.45

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