Given the following shapes: a rectangle with width 3 and height 4, a right_triangle with base 7 and height 5, a rectangle with width 6 and height 1, a trapezoid with bases 3 and 9 and height 1. What is the total area of all shapes? Please round the result to the nearest integer.
<think>Rectangle with width 3 and height 4: Area = 3 x 4 = 12
Right triangle with base 7 and height 5: Area = 0.5 x 7 x 5 = 17.5
Rectangle with width 6 and height 1: Area = 6 x 1 = 6
Trapezoid with bases 3, 9 and height 1: Area = 0.5 x (3 + 9) x 1 = 6.0</think>

<answer>42</answer>