I believe the answer would be b. I think this is because you know that the perimeter is the length times 2 and the width times 2 added together. If you do 12 times 2 you get 24. Then you subtract this from 56 because 56 is the perimeter of the whole thing. Then after this you get 32.Then divide 32 by 2 to find ONE of the widths.
Take the square root of 256 to find the side length of the mirror √256 =16 the rectangles width is 16, it length is 2 inches longer 16+2 =18 so the length is 18 to find the area multiply them together 18x16=288 the area is 288 inches² :)
I believe the wording of the question is: If one tray can hold 12 loaves of bread and the rack can hold 10 trays, can a hundred and twenty-five loaves fit on one rack? Then the answer would be, no. 12 x 10 = 120
