The equation represents a circle of radius

MATHEMATICS · Single correct · CBSE · Mathematics · Conic Sections · Conic Sections

Problem

The equation x2+y2−4x+6y+k=0x^2 + y^2 - 4x + 6y + k = 0 represents a circle of radius 55. What is the value of kk? (a) 88 (b) −12-12 (c) 1212 (d) −8-8

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