Answer: x=3.5
you get ur answer from TOA which is tangent (15)=x/13
You have not provided the diagram but I can tell you The area of a square or rectangle is Length times width. There's also likely a triangle part at the top the area of that is on half base times height. Sorry I couldn't help more <span />
The constant of proportionality is 18.
Hope this helps!
:3
Minus 12 over 16 and 12 over 16
There you go!