Two opposite sides of a square are given by the lines 5x + 12y + 18 = 0 and 5x + 12y – 21 = 0. Find the length of diagonal of the square.

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Solution

The correct option is A 3
Given lines are 5x + 12y + 18 = 0……………….(i) and 5x + 12y – 21 = 0………………….(ii)
Length of the side = distance between lines (i) and (ii) is given by
D = = = = 3
Length of the diagonal = 3; Option(a).

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Two opposite sides of a square are given by the lines 5x + 12y + 18 = 0 and 5x + 12y – 21 = 0. Find the length of the diagonal of the square.

The equation of two sides of a square are $5 x - 12 y - 65 = 0$ and $5 x - 12 y + 26 = 0$ . Find the area of the square.

5 x - 12 y + 26 = 0

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