AP EAMCET Engineering 22 Sep 2020 Shift 1 Paper

Section: Mathematics

Question : 40 of 160

Marks: +1, -0

If the circles x2+y2−2x−2y−7 = 0 and x2+y2+4x+2y+k = 0 cut orthogonally, then the length of their common chord is __________ units.

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