Answers

2014-02-28T10:27:55+05:30
Answer is  4\sqrt{5}
derive it from the formula
AB= \sqrt{ ( x_{1}- x_{2})  ^{2} +(  y_{1}-y_{2}) ^{2} }

you will get the answer

coolbie

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2014-02-28T12:19:05+05:30
By using distance formula
AB=2 sqrt of 5
so 2AB=4 sqrt of 5
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