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

7

Step-by-step explanation:

Using Pythagoras' identity in the right triangle.

let the third side be x , then

x² + (4 )² = 9²

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

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

x = = 7

Then the third side is 7

answer: d. $20

step-by-step explanation:

just took the test

answer: give more info

step-by-step explanation: