The area of the quadrilateral formed by the lines 2x+3y+5=0 , 3x−2y+4=0 , 4x+6y−4=0and 6x−4y+3=0 is ( in square units )
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a
67
b
2123
c
3526
d
2526
answer is C.
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Detailed Solution
Rewrite the given lines as 2x+3y+5=0 …… (1) 3x−2y+4=0 …… (2) 2x+3y−2=0 …… (3) 3x−2y+32=0…… (4)Equations (1) and (3) are parallel lines, equations (2) and (4) are parallel linesEquations (1) and (2) are perpendicular lines, and equations (2) and (3) are perpendicular linesThe figure formed by the lines is rectangle. The area of the rectangle formed is the product of the distances between parallel linesThe distance between two parallel lines ax+by+c1=0 and ax+by+c2=0 is c2−c1a2+b2The distance between two parallel lines (1) and (3) is 5+222+32=713The distance between other two parallel lines (2) and (4) is 32−422+32=5213Therefore, the area is 713⋅5213=3526