Area of the given shape is obtained as,
[tex]\begin{gathered} A=(12\times6)+(11-6)\times4 \\ A=72+(5\times4) \\ A=72+20 \\ A=92m^2 \end{gathered}[/tex]
Perimeter of the shape is simply the addition of all the sides
i.e.
[tex]\begin{gathered} P=12+11+4+6 \\ P=23+10 \\ P=33m \end{gathered}[/tex]
