what’s the third side?

Answer:
24
Step-by-step explanation:
let x represent the third side.
Using Pythagoras' identity in the right triangle, then
x² + 32² = 40²
x² + 1024 = 1600 ( subtract 1024 from both sides )
x² = 576 ( take the square root of both sides )
x = [tex]\sqrt{576}[/tex] = 24
The third side is 24