SOLUTION: fine the exact distance between two points. (20,30)(-30,-90)

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Question 347516: fine the exact distance between two points.
(20,30)(-30,-90)
Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
The formula, given two points, is
d+=+sqrt%28%28x2+-+x1%29%5E2+%2B+y2+-+y1%29%5E2%29
We plug in and get
d+=+sqrt%28%2820+-+%28-30%29%29%5E2+%2B+%2830+-+%28-90%29%29%5E2%29
d+=+sqrt%2850%5E2+%2B+120%5E2%29
d+=+sqrt%282500+%2B+14400%29
d+=+sqrt%2816900%29
d+=+130