Given the following shapes: a right_triangle with base 6 and height 4, a right_triangle with base 8 and height 3, a trapezoid with bases 4 and 6 and height 3. What is the total area of all shapes? Please round the result to the nearest integer.
<think>Right triangle with base 6 and height 4: Area = 0.5 x 6 x 4 = 12.0
Right triangle with base 8 and height 3: Area = 0.5 x 8 x 3 = 12.0
Trapezoid with bases 4, 6 and height 3: Area = 0.5 x (4 + 6) x 3 = 15.0</think>

<answer>39</answer>