Given the following shapes: a right_triangle with base 7 and height 3, a trapezoid with bases 8 and 1 and height 2. What is the total area of all shapes? Please round the result to the nearest integer.
<think>Right triangle with base 7 and height 3: Area = 0.5 x 7 x 3 = 10.5
Trapezoid with bases 8, 1 and height 2: Area = 0.5 x (8 + 1) x 2 = 9.0</think>

<answer>20</answer>