The box has a rectangular base of 5 inches wide and 33 inches long. To protect the items she will need a cover of with the same dimensions: a rectangle of 5 inches wide and 33 inches long. To find its area, we are going to use the area of a rectangle formula:

where

is the are in square inches

is the width

is the length
Since we know that

and

, lets replace those values in our formula:


We can conclude that Beth will need 165 square inches of felt to protect the items in the box.