Answer:
To find the perimeter here it may get a little bit complicated.
Lets get into it...
We know the perimeter of Wyatt's room is a rectangle and has a perimeter of 40 feet.
So whatever we do must equal 40 in the end.
They tell us that the width of the room is 8 feet so lets do 8x2 which is 16
since we are trying to find the length we dont need the width right now so lets do 40-16 which is 24.
Since the formula for the perimeter of a rectangle is 2(lxw) we got the width and the perimeter so all we need is the length.
Lets divide 24 by 2 which is 12
So the lenght is = 12.