Answer:
the length is 9 and the width is 4
Step-by-step explanation:
I think
[tex]x=\sqrt{31}[/tex]
[tex]x*x+5=36\\Subtract 5 on both sides\\x^{2} =31\\\sqrt{x^{2}} =x\\\\\sqrt{31}=\sqrt{31} \\ x=\sqrt{31}[/tex]
