Answer:
The common side is B-E.
Step-by-step explanation:
The only side that they have the same is B-E.
Looks like a regular hexagon
see my attachment
we put some imaginary lines and take the 2 trignles on the right and put them on teh left side
now we have a rectangle wit height 8 and width 2+4 or 6
area=8*6=48 cm^2
You need to divide the top number by the bottom number and you will get your answer