For the circle

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

Problem

For the circle (x−4)2+(y+1)2=81(x - 4)^2 + (y + 1)^2 = 81, the length of its diameter is (a) 99 (b) 2172\sqrt{17} (c) 1818 (d) 8181

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