The formula of the perimeter of a rectangle is:
[tex]P=2*(a+b)[/tex], where [tex]a[/tex] and [tex]b[/tex] are the sides of a rectangle.
If [tex]P=32[/tex] and [tex]a=11[/tex] then:
[tex]b=\frac{P}{2}-a=\frac{32}{2}-11=16-11=5[/tex]
So, the correct answer is 5m.
