Arectangular picture frame is made from one-inch-wide pieces of wood. the area of just the frame is 18 square inches, and one of the outer edges of the frame is 5 inches long. what is the sum of the lengths of the four interior edges of the frame? !

Step-by-step explanation:

Givens

If one side is 5 inches long and the wide is 1 inch, then the inner side is 3 inches long, becase we must subtract the 2 inches of the wide.

The image attached shows all relations we need to make regarding both areas.

The inner area is defined as

The area of the whole

The area of the frame is defined as the difference of the inner area and the whole area

Now, we solve for

The interior each is defined as b-2, so its length is

Therefore, the interior edges are 4 inches and 3 inches long.

All four interior edges are 4 inches, 3 inches, 4 inches and 3 inches.

answer: the answer is 23

step-by-step explanation: