Given the following shapes: a right_triangle with base 4 and height 2, a right_triangle with base 2 and height 4, a trapezoid with bases 3 and 8 and height 3. What is the total area of all shapes? Please round the result to the nearest integer.
<think>Right triangle with base 4 and height 2: Area = 0.5 x 4 x 2 = 4.0
Right triangle with base 2 and height 4: Area = 0.5 x 2 x 4 = 4.0
Trapezoid with bases 3, 8 and height 3: Area = 0.5 x (3 + 8) x 3 = 16.5</think>

<answer>24</answer>