Coordinate Geometry - Finding the Centre and Radius of a Circle

Coordinate Geometry - Finding the Centre and Radius of a Circle

TGM Original Questions

Find the coordinates of the centre and radius of the circle \({{\left( x-3 \right)}^{2}}+{{\left( y+8 \right)}^{2}}=13\).

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Answer:Centre \((3,-8)\); radius \(\sqrt{13}\approx3.61\).

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