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Length of an arc of a sector of angle th th360 2 p r r radius of the circle Surface Area and Volumes Formulas For Class 10. A b 3 a 3 b 3 3aba b. Class 10 Maths Formulas are related to the chapters of Real Numbers Polynomials Triangles Quadratic Equations Statistics Probability etc. LCM HCF Practice Set PDF.