36 x 24=864 whole poster
5 x 12=60 cut part
864 - 60= 804 part that remains
;)
When I did this equation I didn’t get any of these following answer choices, I apologize… Maybe the question was worded incorrectly? Please do let me know more info in the comments underneath this answer for I truly wish to help you out here :)
(P.S my work is shown below)
Answer:
70.5 it is the answer. I hope I am helpful please mark brainlist