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  1. Chapter 11 Class 6 Algebra
  2. Serial order wise
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Ex 11.2, 4 The diameter of a circle is a line which joins two points on the circle and also passes through the centre of the circle. (In the adjoining figure (Fig 11.12). AB is a diameter of the circle; C is its centre.) Express the diameter of the circle (d) in terms of its radius (r).Since C is center of circle CA, CB, CP are radius ∴ CA = CB = CP = r Now, AB is diameter of circle AB = AC + BC d = r + r d = 2r

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 8 years. He provides courses for Maths and Science at Teachoo. You can check his NCERT Solutions from Class 6 to 12.