Respostas

2014-05-16T11:20:55-03:00
A formula e:D=√(Xa-Xb)2+(Ya-Yb)2
então vai fica assim:
D=
√(1-9)2+(9-3)2
D=√(8)2+(6)2
D=√64+36
D=√100
D=10

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2014-05-16T12:48:49-03:00