The area of parallelogram formed by the lines 2x + y + 4 = 0, 2x + y + 5 = 0, ,                 3x + 2y − 5 = 0, 3x + 2y + 3 =0

Area of parallelogram=|(c1−d1)(c2−d2)a1b2−a2b1|        where the sides of the lines are a1x+b1 y+c1=0 ,a1x+b1y+d1=0                                                 and   a2x+b2y+c2=0 ,a2x+b2y +d2=0                                     = |(4−5)(−5−3)4−3|=|(−1)(−8)−1|=8