What is the area, in square units, of a triangle with vertices at $(0,0)$, $(0,5)$, and $(7,12)$? Express your answer as a decimal to the nearest tenth.
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
What is the area, in square units, of a triangle with vertices at $(0,0)$, $(0,5)$, and $(7,12)$? Express your answer as a decimal to the nearest tenth.
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
17.5
What is the area, in square units, of a triangle with vertices at $(0,0)$, $(0,5)$, and $(7,12)$? Express your answer as a decimal to the nearest tenth.
train