Answer:
8
Step-by-step explanation:
LM = KI/2
LM = 16/2
LM = 8
You can make 11 batches of brownies. Divide 8.5 (8 1/2) by .75(3/4)
You circle the points on both sides and then you calculate them and get what you need...
Step 1
Find the area of one equilateral triangle
Applying the law of sines

in this problem
a=b=7 cm
C=60 degrees
so

cm²
Step 2
To calculate the area of the hexagon multiply the area of one equilateral triangle by 
cm²
therefore
the answer is the option
73.5 sqrt 3cm²
Ok now that i understand the question better i say it is D