Arectangular window has a length of 12ft and a width of x ft which expression represent the area of the window

I am not sure but Í guess it's : A=12*x

Someone correct me if I'm wrong.

fist on the left goes with the third on the right. second on the left goes with the fourth on the right. third on the left goes with the second on the right. the fourth on the left goes with first on the right

uhhh idk u yolo?