Given the following shapes: a right_triangle with base 2 and height 7, a right_triangle with base 7 and height 4. What is the total area of all shapes? Please round the result to the nearest integer.
<think>Right triangle with base 2 and height 7: Area = 0.5 x 2 x 7 = 7.0
Right triangle with base 7 and height 4: Area = 0.5 x 7 x 4 = 14.0</think>

<answer>21</answer>