Elmer is customizing a table with an area of 108 square inches he is planning to have Its width be 8 inches less than it's length what is the length of the table​

The length of a rectangular board is 3 feet less than twice its width. a second rectangular board is such that each of its dimensions is the reciprocal of the corresponding dimensions of the first rectangular board. if the perimeter of the second board is one-fifth the perimeter of the first, what is the perimeter of the first rectangular board?