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Question

If A and B are the points (āˆ’6,7) and (āˆ’1,āˆ’5) respectively, then the distance 2AB is equal to

A
28
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B
26
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C
169
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D
238
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Solution

The correct option is D 26
The distance between two points can be found by the equation
AB =(x2x1)2+(y2y1)2
here point A(6,7) and $B(-1,-5)$
AB =(1+6)2+(57)2=169=13
2AB=2×13=26

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