# What is the distance between (31,-201) and (28,-209)?

What is the distance between (31,-201) and (28,-209)?
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tykoyz
The formula for calculating the distance between two points is:
$d=\sqrt{{\left({x}_{2}-{x}_{1}\right)}^{2}+{\left({y}_{2}-{y}_{1}\right)}^{2}}$
Substituting the values from the points in the problem gives:
$d=\sqrt{{\left(28-31\right)}^{2}+{\left(-209+201\right)}^{2}}$
$d=\sqrt{{\left(-3\right)}^{2}+{\left(-8\right)}^{2}}$
$d=\sqrt{73}$
or
d=8.544 rounded to the nearest thousandth.