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Re: Can some one explain this solution in detail [#permalink]
14 Jul 2004, 06:57
CAN SOME ONE EXPLAIN ME THIS SOLUTION
Find area if a line goes through x's greater than or equal 2, y's greater than or equal 3, and y's less than or equal to 9-x.
The area is that of a triangle with points (2,3) (2,7) (6,3) height and base of triangle is 4 and represents a isoceles right triangle area is 4*4/2 = 8
There are 3 points of intersection for these 3 lines (X>=2, Y >= 3, Y <= 9-X), their coords were listed by Paul. Then we note that the triangle, formed by these 3 points is right and calculate its area by multiplying 2 sides which form right angle and dividing the result by 2.