Question

Look at the picture

Answer 1

Answer:

C.

Step-by-step explanation:

use the pythogorean theorem a^2 + b^2 = c^2

Answer 2

Answer:

$3cm,5cm,9cm$

Step-by-step explanation:

${c}^{2} = {a}^{2} + {b}^{2}$

$c = \sqrt{ {a}^{2} + {b}^{2} }$

$9 { = }^{?} \sqrt{ {3}^{2} + {5}^{2} }$

$9 { = }^{?} \sqrt{9 + 25}$

$9 { = }^{?} \sqrt{34}$

$9 \neq 5.8309518948453$

$3cm,5cm,9cm$