Given the following shapes: a right_triangle with base 2 and height 5, a square with side 4, a rectangle with width 7 and height 1, a trapezoid with bases 5 and 1 and height 3. What is the total area of all shapes? Please round the result to the nearest integer.
<think>Right triangle with base 2 and height 5: Area = 0.5 x 2 x 5 = 5.0
Square with side 4: Area = 4^2 = 16
Rectangle with width 7 and height 1: Area = 7 x 1 = 7
Trapezoid with bases 5, 1 and height 3: Area = 0.5 x (5 + 1) x 3 = 9.0</think>

<answer>37</answer>