Figure ABCDE has been dilated as shown to become figure FGHIJ. The two figures below are similar. What scale factor was used for the dilation? Note: If your answer is a fraction, enter it using the slash mark. Example: 5/8.

Step by step explanation pls for 10 pts 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?