Kareem wants to put up a small corner shelf in his room. The shelf is in the shape of a right triangle. One leg of the triangle is 2 inches shorter than the other. The longest side of the shelf is 10 inches long. Kareem needs to find the area of the shelf so that he knows if he has enough paint to cover the top of the shelf. He has enough paint to cover 23 square inches. a. Let the length of the long leg of the triangle equal x .