Find the equation of the circle which circumscribes the triangle formed by the lines `x=0,\ y=0\ a n d\ l x+m y=1.`

Explanation

[#XI_RD_24_063]


The triangle is formed by


`x=0 ldots (i)`


`y=0 ldots (ii)`


`l x+m y=1 ......... (iii)`


The line (iii) cuts the axis at


`A = (O, frac{1}{m})`,


` B = (frac{1}{1}, O)`


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