The distance between the pair of parallel lines \[{{x}^{2}}+2xy+{{y}^{ – McqOptions

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1.	The distance between the pair of parallel lines \[{{x}^{2}}+2xy+{{y}^{2}}-8ax-8ay-9{{a}^{2}}=0\] is [Karnataka CET 2005]
A.	\[2\sqrt{5}a\]
B.	\[\sqrt{10}\,a\]
C.	\[10\,a\]
D.	\[5\sqrt{2}\,a\]
Answer» E.

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