Let $P$ be the point $(0,5),$ let $Q$ be the point $(6,9),$ and let $R$ be the point $(12,0).$ Determine the area of right-angled $\triangle PQR.$
<|im_start|>system
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<|im_start|>user
Let $P$ be the point $(0,5),$ let $Q$ be the point $(6,9),$ and let $R$ be the point $(12,0).$ Determine the area of right-angled $\triangle PQR.$
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
39
Let $P$ be the point $(0,5),$ let $Q$ be the point $(6,9),$ and let $R$ be the point $(12,0).$ Determine the area of right-angled $\triangle PQR.$
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