Given the following shapes: a right_triangle with base 3 and height 1, a rectangle with width 8 and height 1, a rectangle with width 1 and height 1, a trapezoid with bases 1 and 2 and height 6. What is the total area of all shapes? Please round the result to the nearest integer.
<think>Right triangle with base 3 and height 1: Area = 0.5 x 3 x 1 = 1.5
Rectangle with width 8 and height 1: Area = 8 x 1 = 8
Rectangle with width 1 and height 1: Area = 1 x 1 = 1
Trapezoid with bases 1, 2 and height 6: Area = 0.5 x (1 + 2) x 6 = 9.0</think>

<answer>20</answer>