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If the area of the triangle formed by the pair of lines `8x^2 - 6xy + y^2 = 0` and the line `2x+3y=a` is 7 then `a=`

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If the area of the triangle formed by the pair of lines `8x^2 - 6xy + y^2 = 0` and the line `2x+3y=a` is 7 then `a=`
A. 14
B. `14sqrt2`
C. 28
D. none of these
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Correct Answer - C
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