Given the following shapes: a right_triangle with base 3 and height 4, a square with side 1, a trapezoid with bases 3 and 1 and height 1, a trapezoid with bases 3 and 3 and height 7. What is the total area of all shapes? Please round the result to the nearest integer.
<think>Right triangle with base 3 and height 4: Area = 0.5 x 3 x 4 = 6.0
Square with side 1: Area = 1^2 = 1
Trapezoid with bases 3, 1 and height 1: Area = 0.5 x (3 + 1) x 1 = 2.0
Trapezoid with bases 3, 3 and height 7: Area = 0.5 x (3 + 3) x 7 = 21.0</think>

<answer>30</answer>