Answer:
868 (third option)
Step-by-step explanation:
we know that the area of original is
.
the new parallelogram will has area 
8-21
9- -16 i think lemme do the next ones
This is the number of combinations of 4 from 12
12C4 = 12!
----------
4! 8!
= 12*11*10*9 11*5*9 = 495
-------------- =
4*3*2*1
If you can give me more info, I can solve this for you, please write out the complete problem.
They just told me to answer a bunch of questions sorry i dont know this best of luck tho !