Answer:
I Think Its 14 Feet.
Step-by-step explanation:
14 feet because the window is 8 feet high and he has to move it back 6 feet. So when you add 8 and 4 you would get the answer of 14 feet.
4 because it has four sides






Note
Write the number until underlined point.I did it till end
3x=90 2x=50
And the last one is 40