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1 markCentre and Radius of a Circle

CSEC Additional Mathematics · 2015 · Paper 2 · Question 3(a)(ii)

The equation of a circle is given by x^2 + y^2 - 12x - 22y + 152 = 0.

Find the length of the radius.

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Other parts of this question

  1. 3(a)(i)Determine the coordinates of the centre of the circle.[2 marks]
  2. 3(a)(iii)Determine the equation of the normal to the circle at the point (4, 10).[3 marks]
  3. 3(b)(i)Determine the unit vector AB.[3 marks]
  4. 3(b)(ii)Determine the acute angle AOB, in degrees, to one decimal place.[3 marks]

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