A triangle has vertices at coordinates $(11,1)$, $(2,3)$ and $(3,7)$.  What is the number of units in the length of the longest side of the triangle?
Question:
A triangle has vertices at coordinates $(11,1)$, $(2,3)$ and $(3,7)$.  What is the number of units in the length of the longest side of the triangle?
Answer:
Let's think step by step.

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A triangle has vertices at coordinates $(11,1)$, $(2,3)$ and $(3,7)$.  What is the number of units in the length of the longest side of the triangle?
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