Given the following shapes: a trapezoid with bases 1 and 6 and height 1, a rectangle with width 5 and height 1, a right_triangle with base 7 and height 3, a right_triangle with base 9 and height 2. What is the total area of all shapes? Please round the result to the nearest integer.
<think>Trapezoid with bases 1, 6 and height 1: Area = 0.5 x (1 + 6) x 1 = 3.5
Rectangle with width 5 and height 1: Area = 5 x 1 = 5
Right triangle with base 7 and height 3: Area = 0.5 x 7 x 3 = 10.5
Right triangle with base 9 and height 2: Area = 0.5 x 9 x 2 = 9.0</think>

<answer>28</answer>