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Circle – Formulas

Circle – Formulas. Radius of the circle is generally denoted by letter R . Diameter of the circle D = 2 × R Circumference of the circle C = 2 ×  × R (  = 22/7) Area of the circle A =  × R2 . Quadrilaterals – Formulas . Rhombus. Square. Rectangle. Area = lb Perimeter = 2( l+b )

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Circle – Formulas

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  1. Circle – Formulas Radius of the circle is generally denoted by letter R. Diameter of the circle D = 2 × R Circumference of the circle C = 2 ×  × R ( = 22/7) Area of the circle A =  × R2

  2. Quadrilaterals – Formulas Rhombus Square Rectangle Area = lb Perimeter = 2(l+b) l = length b = breadth Area = (d1d2)/2 Perimeter = 4s s = side d1,d2 = diagonals Area = s2 Perimeter = 4s (s = side) Kite Trapezium Parallelogram Area = ba Perimeter = 2(l + b) (b = base/breadth a = altitude l = length) d1, d2 = diagonals

  3. Triangles – Formulas Area of a triangle = ½ × base × height Perimeter of an equilateral triangle = 3s (s = side) Area of an equilateral triangle

  4. Solids – Formulas

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