8. Determine the area of the pentagon formed

Harish keeps five dots on an empty sheet of paper. On joining the dots, a pentagon is formed. Find the area of the pentagon, $ABCDE$, in which $BL ⊥ AC$, $DM ⊥ AC$, and $EN ⊥ AC$. Also,  $AC =$ 22 $cm$, $AM =$ 12 $cm$, $AN =$ 6 $cm$, $BL =$  2.8 $cm$, $DM =$ 12 $cm$ and $EN =$ 8 $cm$.

 

 

The area of the pentagon is  $cm^2$.

 

[Note: Round off the answer obtained to the nearest whole number]