The area (in square units) of the quadrilateral formed by the two pairs of lines\[{{l}^{2}}{{x}^{2}}-{{m}^{2}}{{y}^{2}}-n(lx+my)=0\]and \[{{l}^{2}}{{x}^{2}}-{{m}^{2}}{{y}^{2}}+n(lx-my)=0\] is [EAMCET 2003]

The area (in square units) of the quadrilateral formed by the two pair

1.	The area (in square units) of the quadrilateral formed by the two pairs of lines\[{{l}^{2}}{{x}^{2}}-{{m}^{2}}{{y}^{2}}-n(lx+my)=0\]and \[{{l}^{2}}{{x}^{2}}-{{m}^{2}}{{y}^{2}}+n(lx-my)=0\] is [EAMCET 2003]
A.	\[\frac{{{n}^{2}}}{2\|lm\|}\]
B.	\[\frac{{{n}^{2}}}{\|lm\|}\]
C.	\[\frac{n}{2\|lm\|}\]
D.	\[\frac{{{n}^{2}}}{4\|lm\|}\]
Answer» B. \[\frac{{{n}^{2}}}{\|lm\|}\]

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The area (in square units) of the quadrilateral formed by the two pairs of lines\[{{l}^{2}}{{x}^{2}}-{{m}^{2}}{{y}^{2}}-n(lx+my)=0\]and \[{{l}^{2}}{{x}^{2}}-{{m}^{2}}{{y}^{2}}+n(lx-my)=0\] is [EAMCET 2003]

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