Question

http://prntscr.com/6m8hnj

Answer 1

r u in k12

Answer 2

\[P_{\triangle} = a+b+c\]Use the pythagorean theorem to find side length c.\[c=\sqrt{5^2+3^2}\]Then use that along with \(b=5~,~a=3\) to find the Perimeter.