Hi there!
First let's find the total area of the wall: 12 x 8 = 96. Then, we need to subtract out the window. To find the area of the wall, we'll need to find the area of the window and subtract it from the total area of the wall: 4 x 8 = 32 | 96 - 32 = 64. However, I am assuming the height of the window is 8 feet. If the window is 1 foot tall, the answer is 92 feet. If the window is 4 feet tall, the answer is 80 feet.
(The first and last answers are incorrect) As there is no picture provided, as I am assuming there is a picture, please follow my instructions left for you above as to what the answer would be depending on the height of the window.
Hope this helps!! :)
Depending on the mask, you can describe its features and any damages it has for sell. You should also state whether the price you are asking is firm or you'll take offers. Last, you should tell them if it has been worn much or like brand new.
yw ^_^