The previous response give you the width but now the perimeter.
The full solution is as states:
Area = length x width
154 = 11w
Complete the Inverse Operation for Multiplication and Divide 154 by 11
14 = w ....therefore the width is 14 feet
Perimeter = 2(length) + 2(width)
P = 2(11) + 2(14)
P = 22 + 28
P= 50 ....therefore the perimeter of the room is 50 feet