To find surface area you have to do all sides and multiply base x height so The top and bottom would be 11 x 2 = 22 the sides would be 4 x 2 = 8 the front and back would be 11 × 4 = 44 sense each face has a matching one each of these will be added twice so 22 + 22 + 8 + 8 + 44 + 44 = 148 So 148 is our surface area Hope this explains well!
