Mrs. Martin wants to place a ribbon around the outer edge of a rectangle mirror. The area of the mirror is 324 square inches. The width of the mirror is 12 inches. How many inches of ribbon does Mrs. Martin need?
First find the length. Area of rectangle is length time width 324/12= 27 inches. This question is asking for the perimeter . Perimeter is found by adding all four sides together . 27+12+27+12= 78 in of ribbon
