Answer:
10/12x100%= 83.3%
Step-by-step explanation:
251,782.
Just add 3*16,454 to the original number.
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
B) because the rate of change is 7, while for A the rate of change is 6 and for C and D the rate of change is 4