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d = Root of((y" - y')2 + (x" - x')2)

d = Root of ((30-8)2 + (21-3)2)

d = Root of (22x22 + 18x18)

d = Root of (484 + 324)

d = Root of 808 = 28.425

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Q: What is the distance between the points 21 30 and 3 8?
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