We use many objects in our daily life, which are round in shape, such as wheels of a vehicle, sun, moon, a dinner plate, button of shirts etc. These are real examples of a circle. Let’s study about circle and it’s parts. Definition:    1. Circle           A circle is a collection of […]

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Circle – Area – Formula and Problems with Solutions  Area of a circle is A = 𝝿r2 = 𝝿 (pi) x (radius)2 , where r is radius of the circle. or when we know the diameter A = (𝝿/4) x D2 when we know circumference A = c2/4𝝿 Let us now solve problems on area of a circle. (1) […]

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Right Circular Cylinder          Surface Area of a Right Circular Cylinder Definition:           Right Circular Cylinder A Right Circular Cylinder is a three dimensional object, whose base is circle and the height (axis) is the line joining the centers of bases. We take a rectangular sheet of a paper whose length […]

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 Circumscribed and Inscribed Circle    1. Circumscribed circle In geometry, the Circumscribed circle or circumcircle of a polygon is a circle that passes inside a circle in such a way that all its vertices lie on the circle, or just touch the circle.   Centre of this circle is called circumcenter and its radius is called […]

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