Answer:
204 in
Step-by-step explanation:
I can't really explain this other than that you have to add all the sides and the outside of this shape. For the hypotenuse you use the formula [tex]a^2+b^2=c^2[/tex]. Now just fill in what you know.
[tex]12^2+9^2=x^2\\144+81=x^2\\225=x^2\\x=15[/tex]
So we have:
length: 12in
base: 9in
hypotenuse: 15in
So now we do 12+15+9+15+12+15+9+15+12+15+9+15+12+15+9+15. Once we do all that we get 204 in.
