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1978 AMC 12 Question 26

AMC12 · 1978 AMC 12

Question 26

In $\triangle ABC,$ $AB=10,$ $AC=8,$ and $BC=6.$ Circle $P$ is the circle with smallest radius which passes through $C$ and is tangent to $AB.$ Let $Q$ and $R$ be the points of intersection, distinct from $C,$ of circle $P$ with sides $AC$ and $BC,$ respectively. The length of segment $QR$ is

Question illustration
  1. $4.75$
  2. $4.8$
  3. $5$
  4. $4\sqrt2$
  5. $3\sqrt3$