Answer: TR = 20
Distance formula: \(d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\).
\[TR=\sqrt{(9+3)^2+(-10-6)^2}\]
\[=\sqrt{144+256}=\sqrt{400}=20\]
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Doubtly AI
· 24 Oct 2026
AI-verified · Oct 2026
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