Explanation:
The window has a length of 6 feet and a width of 11 feet.
Let us keep the length of the window as X. We know that the width is X + 5.
We are given that X + X + X + 5 + X + 5 = 34
So, 4X + 10 = 34
4X = 24
X = 6.
Since X was our length, we know that the length of the window is 6 feet. The width would be X + 5 or 6 + 5 which is equal to 11 feet.
Hope this was of help.