Given the following shapes: a square with side 3, a trapezoid with bases 3 and 1 and height 3. What is the total area of all shapes? Please round the result to the nearest integer.
<think>Square with side 3: Area = 3^2 = 9
Trapezoid with bases 3, 1 and height 3: Area = 0.5 x (3 + 1) x 3 = 6.0</think>

<answer>15</answer>