Answer: 
Step-by-step explanation:
Given : A sheet of paper has dimensions of 8.5 in x 11 in.
Then, the area if the sheet of paper will be :_

Also, we cut
from each corner of the sheet.
Since, there are 4 corner in a sheet , then the combined area we cut will be :-

Now, the area of the sheet of paper will be =

Hence, the area of the sheet of paper will be 