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## anonymous 5 years ago The distance between the points (3,3) and (2,1) is: a) 29 b) 5 c) sqrt of 29 d) sqrt of 5 e) 1

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1. anonymous

$D(P1,P2)=\sqrt{(3-2)^{2}+(3-1)^{2}}$

2. anonymous

so the $\sqrt{5} ?$

3. anonymous

$\sqrt{(1)^{2}+(2^{2})}=\sqrt{5}$

4. anonymous

thank you

5. anonymous

Yes you got the correct answer.

6. anonymous

The general equation to calculate a distance between two points, say A and B is :$AB = \sqrt{(x _{b}-x_{a})^{2}+(y _{b}-y_{a})^{2}}$ This also applies to points in space, just be sure to include the z component in the sum.

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