Question

Find the length of the third side. If necessary, write in simplest radical form. 472 9

Answer 1

Answer:

7

Step-by-step explanation:

Using Pythagoras' identity in the right triangle.

let the third side be x , then

x² + (4$\sqrt{2}$ )² = 9²

x² + 32 = 81 ( subtract 32 from both sides )

x² = 49 ( take the square root of both sides )

x = $\sqrt{49}$ = 7

Then the third side is 7