Find the length of the third side. If necessary, write in simplest radical form.
![Find the length of the third side If necessary write in simplest radical form class=](https://us-static.z-dn.net/files/d92/88999df575a8c213e631c195a21d4f1c.png)
Let the third side be x :
( 3√5 )^2 = 6^2 + x^2
45 = 36 + x^2
x^2 = 45 - 36
x^2 = 9
x = 3