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  2. Area of a circle - Wikipedia

    en.wikipedia.org/wiki/Area_of_a_circle

    Another proof that uses triangles considers the area enclosed by a circle to be made up of an infinite number of triangles (i.e. the triangles each have an angle of dπœƒ at the centre of the circle), each with an area of ⁠ 1 / 2 ⁠ · r 2 · dπœƒ (derived from the expression for the area of a triangle: ⁠ 1 / 2 ⁠ · a · b · sinπœƒ ...

  3. Circle - Wikipedia

    en.wikipedia.org/wiki/Circle

    The circle is the shape with the largest area for a given length of perimeter (see Isoperimetric inequality). The circle is a highly symmetric shape: every line through the centre forms a line of reflection symmetry, and it has rotational symmetry around the centre for every angle.

  4. Central Board of Secondary Education - Wikipedia

    en.wikipedia.org/wiki/Central_Board_of_Secondary...

    The option of choosing mathematics will be mentioned in the registration form for class 10 CBSE board examination. Candidates will be required to select their choice of test while filling the registration form for CBSE Class 10 board examination 2020. [28]

  5. Dividing a circle into areas - Wikipedia

    en.wikipedia.org/wiki/Dividing_a_circle_into_areas

    The number of points (n), chords (c) and regions (r G) for first 6 terms of Moser's circle problem. In geometry, the problem of dividing a circle into areas by means of an inscribed polygon with n sides in such a way as to maximise the number of areas created by the edges and diagonals, sometimes called Moser's circle problem (named after Leo Moser), has a solution by an inductive method.

  6. Mathematics - Wikipedia

    en.wikipedia.org/wiki/Mathematics

    Mathematics is a field of study that discovers and organizes methods, theories and theorems that are developed and proved for the needs of empirical sciences and mathematics itself. There are many areas of mathematics, which include number theory (the study of numbers), algebra (the study of formulas and related structures), geometry (the study ...

  7. Seeing the number 1212 everywhere? Here's what it might mean

    www.aol.com/seeing-number-1212-everywhere-heres...

    It’s about digging into the relationship and seeing if those healthy areas of growth are available. That just-around-the-corner suggestion also exists if you’re single and seeing 1212, Kumaar ...

  8. List of formulae involving π - Wikipedia

    en.wikipedia.org/wiki/List_of_formulae_involving_π

    where C is the circumference of a circle, d is the diameter, and r is the radius. More generally, = where L and w are, respectively, the perimeter and the width of any curve of constant width. = where A is the area of a circle. More generally, =

  9. 10 Over-the-Top Christmas Decorations That Cost a Fortune - AOL

    www.aol.com/10-over-top-christmas-decorations...

    In honor of his late partner, Lynda Cummings, Paul Bibby decorates his house with over 30,000 twinkling lights and 70,000 bulbs. The display includes inflatable festive figures and serves as a ...