To find the area of the first figure, which is a rectangle, we use the formula: Area = length x breadth. So, the area of the rectangle is 9 x 13 = 117.

To find the area of the second figure, which is a triangle, we use the formula: Area = (base x height) / 2. So, the area of the triangle is (9 x 9) / 2 = 81 / 2 = 40.5.

When the two figures are joined together, the total area is the sum of the areas of the rectangle and the triangle: 117 + 40.5 = 157.5.

Therefore, the answer is not 99, but 157.5.