Coordinate Geometry - Finding the Centre and Radius of a Circle
Coordinate Geometry - Finding the Centre and Radius of a Circle
TGM Original Questions
A circle has equation \(x^2 + y^2 + 22x + 40y - 8 = 0\).
- Find the centre and radius of the circle.
- Is the point \((23, 15)\) inside the circle? Explain your answer clearly.
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Answer:(a) Centre \(= (-11, -20)\); Radius \(=23\) (b) \( (23,15)\) is outside the circle
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