38. The first 3 elements of a pattern are shown below. Each element is composed of small squares that are 18 inches wide and 18 inches long. Each element after the 1st element is a square that is 18 inches wider and 18 inches longer than the previous element. What is the area, in square feet, of the 4th element?
Your Answer is
Correct Answer is K
Explanation
18 inches=1.5 feet. It can be seen from the graphics law that the fourth figure is a large square composed of 4 small squares on each side, so the side length is 1.5*4=6, and the area is 36