Given the following shapes: a right_triangle with base 6 and height 1, a square with side 1, a square with side 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 1: Area = 0.5 x 6 x 1 = 3.0
Square with side 1: Area = 1^2 = 1
Square with side 3: Area = 3^2 = 9</think>

<answer>13</answer>