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Question

If Q(0,1) is equidistant from P(5,3) and R(x,6), find the values of x. Also find the distances QR and PQ.

A
PQ=QR=41
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B
PQ=20, QR=29
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C
PQ= 29, QR= 20
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D
PQ=19, QR = 21
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Solution

The correct option is D PQ=QR=41
Q is equidistant from P and R
=>PQ=RQ
=>PQ2=RQ2
=>(5)2+(4)2=x2+(5)2=>x2=16=>x=±4
Now PQ=QR=16+25=41

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